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{\bf SEMINAIRE LOTHARINGIEN DE COMBINATOIRE}
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\section
{\bf 1\`ere Session, 8.-9.3.1980, Strasbourg 
et 
\\
3\`eme Session, 2.-3.2.1981, Le Kleebach, Alsace}

Organisateur, \'editeur: Dominique {\sc Foata} (Strasbourg)

\begin{itemize}

\item
{\sc Barnabei} (Marilena) --- \\
Recursive matrices and Lagrange inversion

\item
{\sc Beth} (Thomas) --- \\
Cryptographie

\item
{\sc Beth} (Thomas) --- \\
Mathieu Gruppen, Witt Designs and Golay Codes

\item
{\sc Clausen} (Michael) --- \\
Letter Place Algebras and Represenation Theory

\item
{\sc Dumont} (Dominique) --- \\
Interpr\'etation combinatoire des fonctions 
elliptiques de Jacobi

\item
{\sc Foata} (Dominique) --- \\
Nouvelles statistiques mahoniennes sur le groupe
sym\'etrique d'apr\`es Rawlings

\item
{\sc Foata} (Dominique) --- \\
Combinatoire des identit\'es sur les polyn\^omes de Meixner

\item
{\sc Kerber} (Adalbert) --- \\
Aus der Darstellungstheorie symmetrischer Gruppen

\item
{\sc L\"uneburg} (Heinz) --- \\
Der Algorithmus Dreht\"ur

\item
{\sc M\"ors} (M.) --- \\
Ein neues Ergebnis \"uber das Problem von K. Zarankiewicz

\item
{\sc Oberschelp} (Walter) --- \\
Symbolic Methods for Exhausting Discrete Functions

\item
{\sc Perrin} (Dominique) --- \\
Un survol de la th\'eorie des codes

\item
{\sc Pirillo} (Giuseppe) --- \\
Su un teorema di Justin

\item
{\sc Stockhofe} (Dieter) --- \\
Certain bijections on the set of partitions of a natural number

\item
{\sc Strehl} (Volker) --- \\
Symmetric Eulerian Distributions for Involutions

\item
{\sc Th\"urlings} (Karl-Josef) --- \\
Anzahlbestimmung von Bahnen einer Permuationsdarstellung

\item
{\sc Triesch} (Eberhard) --- \\
\"Uber die Komplexit\"at von Grapheneigenschaften

\item
{\sc Vedder} (Klaus) --- \\
Baer subplanes of finite projective planes

\item
{\sc Viennot} (George) --- \\
Le nombre des permutations de Baxter

\item
{\sc Viennot} (Xavier G.) --- \\
Th\'eorie g\'eom\'etrique des polyn\^omes orthogonaux

\item
{\sc Voigt} (Bernd) --- \\
Cycles in graphs with small density

\item
{\sc Wagner} (Bernd) --- \\
A permutation representation theoretical version of a theorem of Frobenius

\item
{\sc Winkelmann} (Klaus) --- \\
Weighing Problems and Sums of Permutations

\item
{\sc Wolff} (Karl-Erich) --- \\
Some results on point stable designs
\end{itemize}

\section
{\bf 5\`eme Session , 7.-8.12.1981, 
Sainte-Croix-aux-Mines, Alsace}

Organisateur, \'editeur: Jacques {\sc D\'esarm\'enien} (Strasbourg)

\begin{itemize}

\item
{\sc Barsky} (Daniel) --- \\
Analyse p-adique et suites classiques de nombres

\item
{\sc Cigler} (Johannes) --- \\
Elementare q-Identit\"aten

\item
{\sc Dumont} (Dominique) --- \\
Matrices d'Euler-Seidel

\item
{\sc Faigle} (Ulrich) --- \\
The Greedy Algorithm  as a Combinatorial Principle

\item
{\sc Gillis} (J.), {\sc Reznick} (B.), {\sc Zeilberger} (D.) ---\\
 On Elementary Methods in Positivity Theory

\item
{\sc Hofbauer} (Josef) --- \\
Ein q-Analogon der Lagrange'schen Inversionsformel

\item
{\sc Kirschenhofer} (Peter) --- \\
\"Uber die mittlere H\"ohe von monoton gelabelten 
Wurzelb\"aumen

\item
{\sc Kerber} (Adalbert) --- \\
Charaktere endlicher Gruppen und Teilbarkeitsfragen

\item
{\sc De Luca} (Aldo) --- \\
A Properti of Fibonacci Words

\item
{\sc Radoux} (Christian) --- \\
Nouvelles formules de r\'ecurrence pour les fonctions
$\sigma_k(n) = \sum\limits_{d|n} d^k$

\item
{\sc Strehl} (Volker) --- \\
Zum q-Analogon der Kongruenz von Lucas
\end{itemize}

\vspace{2cm}

\section
{\bf 6\`eme Session, 29.9.-1.10.1982, Burg Feuerstein, Oberfranken}

Organisator, Herausgeber: Volker {\sc Strehl} (Erlangen)

Eingeladene Vortr\"age:
\begin{itemize}
\item
Anders {\sc Bj\"orner} (Stockholm) ---
Cohen-Macauley partially ordered sets

\item
Josef {\sc Hofbauer} (Wien) --- 
Lagrange-Inversion
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Bachem} (Achim) --- \\
On polars of face lattices of oriented matroids

\item
{\sc D\'esarm\'enien} (Jaques) --- \\
Les q-analogues des polyn\^omes d'Hermite

\item
{\sc Deuber} (Walter) --- \\
Recent results in partition theory

\item
{\sc Dress} (Arne) --- \\
\"Uber einige Definitionen und S\"atze, die als Grundlage
beim Aufbau einer arithmetischen Theorie von Matroiden gebraucht werden 
k\"onnen.

\item
{\sc Golembiowski} (A.) --- \\
Zur Darstellungstheorie der abz\"ahlbar unendlichen
symmetrischen Gruppe

\item
{\sc Hofbauer} (J.) --- \\
Lagrange---Inversion

\item
{\sc Kerber} (Adalbert), {\sc Th\"urlings} (Karl-Josef) --- \\
Symmetrieklassen von Funktionen und deren Abz\"ahlungstheorie II

\item
{\sc Kirschenhofer} (Peter) --- \\
Some new results on the average shape of binary
trees and other simply generated families

\item
{\sc Nicoletti} (Giorgio) --- \\
Lagrange inversion in infinitely many variables


\item
{\sc Pin} (Jean-Eric) --- \\
Vari\'et\'es de langages et combinatoire

\end{itemize}

\section
{\bf 7\`eme Session , 30.1.-2.2.1983,
Donndorf bei Bayreuth, Oberfranken}

Organisator, Herausgeber: Adalbert {\sc Kerber}, Bayreuth

Eingeladene Vortr\"age:
\begin{itemize}
\item
Achim {\sc Bachem} (Bonn) ---
New Trends in Combinatorial Optimization

\item
Dominique {\sc Perrin} (Paris) --- Codes
\end{itemize}

Actes du S\'eminaire:

\begin{itemize}
\item
{\sc Bachem} (Achim) --- \\
New Trends in Combinatorial Optimization

\item
{\sc Berstel} (Jean), {\sc Perrin} (Dominique) --- \\
Codes Circulaires

\item
{\sc Cerlienco} (Luigi), {\sc Piras} (Francesco) --- \\
A few properties and applications of the linearly recursive sequences

\item
{\sc Golembiowski} (Andreas) --- \\
Zur Darstellungstheorie der abz\"ahlbar symmetrischen
Gruppe \"uber K\"orpern der Charakterisitik 0

\item
{\sc H\"asselbarth} (Werner) --- \\
A Combinatorial Description of Structure and Properties

\item
{\sc L\"uneburg} (Heinz) --- \\
\"Uber symmetrische Polynome

\item
{\sc Voigt} (Bernd) --- \\
A Common Generalization of Binomial Coefficients,
Stirling Numbers and Gaussian Coefficients
\end{itemize}

\section
{\bf 8\`eme Session, 23.-28.5.1983, 
Sainte-Croix-aux-Mines, Alsace}

Organisateur, \'editeur: Dominique {\sc Foata} (Strasbourg)

Actyes di s\'eminaire:

\begin{itemize}
\item
{\sc Barnabei} (Marilena) --- \\
Composition inversion of triangular sets of
series

\item
{\sc D\'esarm\'enien} (Jacques) --- \\
Une autre interpr\'etation du nombre des
d\'erangements

\item
{\sc Foata} (Dominique), {\sc Zeilberger} (Doron) --- \\
Weighted derangements and Laguerre polynomials

\item
{\sc Kerber} (Adalbert) --- \\
Eine Bemerkung \"uber Homogene Mengen in endlichen
Gruppen

\item
{\sc Kerber} (Adalbert), {\sc Th\"urlings} (Karl-Josef) --- \\
Eulerian numbers, Foulkes characters and Lefschetz characters of $S_n$

\item
{\sc Lascoux} (Alain) --- \\
Fonctions sym\'etriques

\item
{\sc Leeb} (Klaus), {\sc Pirillo} (Giuseppe) --- \\
Shuffle-invariant total orders

\item
{\sc L\"uneburg} (Heinz) --- \\
\"Uber symmetrische Polynome

\item
{\sc Milne} (Stephen C.) --- \\
An umbral calculus for polynomials characterizing
 $U(n)$ tensor product

\item
{\sc Oberst} (Ulrich), {\sc D\"ur} (Arne) ---\\
Die Konstruktion aller maximalen Code mit Hilfe von MDS---Coden

\item
{\sc Picon} (Pierre-Andr\'e) --- \\
Sur un th\'eor\`eme de Landau

\item
{\sc Vauchassade de Chaumont} (M.), {\sc Viennot} (G\'erard) ---\\
Polyn\^omes orthogonaux et probl\`emes d'\'enum\'eration en biologie
mol\'eculaire

\item
{\sc Voigt} (Bernd) --- \\
A common generalization of binomial coefficients,
Stirling numbers and Gaussian coeffizients
\end{itemize}


\section
{\bf 9\`eme Session  13.-15.9.1983,
Hollabrunn, Nieder\"osterreich}

Organisatoren, Herausgeber: Gerd {\sc Baron} und Peter {\sc Kirschenhofer}
(Wien)

Eingeladene Vortr\"age:
\begin{itemize}
\item
Peter {\sc Gerl} (Salzburg) ---
Wachstum und Irrfahrten bei Gruppen und Graphen

\item
Arnold. R. Kr\"auter (Leoben) ---
Permanenten --- ein kurzer \"Uberblick

\item
Norbert {\sc Seifter} (Leoben) ---
Permanenten in der Kombinatorik
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Bublitz} (S.) --- \\
Monotone fuormula size of homogeneous functions

\item
{\sc Cerlienco} (Luigi), {\sc Nicoletti} (G.), {sc Piras} (F.) --- \\
Automorphisms of graded coalgebras and analogs of the umbral calculus

\item
{\sc D\"ur} (Arne) --- \\
Kombinatorische Strukturen, nilpotente Gruppen und
Potenzreihendarstellungen

\item
{\sc Gerl} (Peter) --- \\
Wachstum und Irrfahrten bei Gruppen und Graphen

\item
{\sc Kr\"auter} (Arnold Richard) --- \\
Permanenten --- Ein kurzer \"Uberblick

\item
{\sc L\"uneburg} (Heinz) --- \\
Effektive Konstruktion der algebraischen Erweiterungen
von GF(p) sowie der vollst\"andigen Kreisteilungsk\"orper

\item
{\sc Paule} (Peter) --- \\
q---Identit\"aten (vom Rogers---Ramanujan Typ)

\item
{\sc Prodinger} (Helmut) --- \\
Abz\"ahlprobleme bei B\"aumen


\item
{\sc Seifter} (Norbert) --- \\
Permanenten in der Kombinatorik

\end{itemize}


\section
{\bf 10\`eme Session, 1.-4.4.1994, Burg Feuerstein, Oberfranken}

Organisator, Herausgeber:
Roman {\sc K\"onig} (Erlangen)

Eingeladene Vortr\"age:
\begin{itemize}
\item
Jean {\sc Berstel} (Paris) ---
W\"orter ohne Wiederholungen

\item
Robert {\sc Cori} (Bordeaux) ---
Cartes, hypercartes et leurs groupes d'automorphismes
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Alles} (P.) --- \\
Dimension von Summen und Graphen

\item
{\sc Berstel} (Jean) --- \\
W\"orter ohne Wiederholungen

\item
{\sc Cohen} (Daniel I. A.) --- \\
Counting Stable Sets in Trees

\item
{\sc Cori} (Robert) --- \\
Cartes, hypercartes et leurs groupes d'automorphismes

\item
{\sc Cori} (Robert), {\sc Perrin} (Dominique) --- \\
Monoides partiellement commutatifs

\item
{\sc Degen} (Wolfgang), {\sc Leeb} (Klaus), 
{\sc Pirillo} (Giuseppe), {\sc Sperber} 
(Helmut) --- \\
Some Things Some Functions May Be, Some Others Can't Be

\item
{\sc Dress} (Andreas) --- \\
Regular Polytopes and Equivariant Tessellations From a
Combinatorial Point of View

\item
{\sc D\"ur} (Arne) --- \\
The Number of Matrices Over a Finite Field with Prescribed
Eigenspaces

\item
{\sc Gerl} (Peter) --- \\
Rekurrente und transiente B\"aume

\item
{\sc Gr\"otschel} (Martin) --- \\
Characterisations of Perfect Graphs

\item
{\sc Jackson} (David M.) --- \\
Symmetric Functions an P-Recursiveness

\item
{\sc Lascoux} (Alain), {\sc Sch\"utzenberger} (Marcel P.) --- \\
Universalit\'e des Polyn\^omes de Schubert

\item
{\sc Leeb} (Klaus), {\sc Pirillo} (Giuseppe) --- \\
All the  $\omega$-compatible graded Orderings on $\cup^{n_2}_{n \in \omega}$
\end{itemize}

\section
{\bf 11\`eme Session, 23.-27.9.1984, 
Wasserschloss Mitwitz bei Kronach, Oberfranken}

Organisatoren, Herausgeber:
Johannes {\sc Grabmeier} und Adalbert {\sc Kerber} (Bayreuth)

Eingeladene Vortr\"age:

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Barnabei} (Marilena), {\sc Brini} (A.) --- \\
Dissections of Convex Sets and Homotopy Types of Posets

\item
{\sc Cerlienco} (Luigi), {\sc Nicoletti} (Giorgio), 
{\sc Piras} (Francesco) --- \\
Umbral Calculus

\item
{\sc D\'esarm\'enien} (Jacques), {\sc Foata} (Dominique) --- \\
Fonctions Sym\'etriques et S\'eries Hyperg\'eom\'etriques Basiques 
Multivari\'ees

\item
{\sc Deuber} (Walter) --- \\
Ramsey Theorie

\item
{\sc Dumont} (Dominique) --- \\
Nombres de Genocchi et pics de cycles

\item
{\sc Jacobs} (Konrad) --- \\
Ergodentheorie und Kombinatorik

\item
{\sc Jacobs} (Konrad) --- \\
Ein ma\"stheoretisches max-flow Programm

\item
{\sc James} (Gordon D.) --- \\
A q-analogue of the representation theory of
$S_n$

\item
{\sc K\"onig} (Roman) --- \\
Entscheidbare Variet\"aten von aperiodischen
Monoiden

\item 
{\sc Kr\"auter} (Arnold Richard) --- \\
\"Uber die Permantente gewisser zirkulanter 
Matrizen und damit zusammenh\"angender Toeplitz-Matritzen

\item
{\sc Kreweras} (Germain) --- \\
Abz\"ahlung gewisser Pfade in der ${\bf Z}^2$-Ebene

\item
{\sc Lex} (Walter) --- \\
\"Uber positive L\"osungen linearer diophantischer Gleichungen
und einen Satz von Teuffel

\item
{\sc Paule} (Peter) --- \\
\"Uber die q-Lagrange Inversion

\item
{\sc Poupard} (Y.) --- \\
Plusieurs Familles de Nombres Reconstitu\'ees a
Partir d'Atomes Communs

\item
{\sc Voigt} (Bernd) --- \\
On the evolution of finite affine and projective Spaces

\item
{\sc Wolff} (Karl-Erich) --- \\
Punkt-stabile Inzidenzsgtrukturen und stochastische
Matritzen
\end{itemize}

\section
{\bf 12\`eme Session, 27.-30.1.1995, Le Kleebach, Alsace}

Organisateur, \'editeur: Dominique {\sc Dumont} (Strasbourg)


Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Arques} (Didier) --- \\
\'Enum\'eration et codage des cartes et hypercartes
planaires point\'ees

\item
{\sc Cerlienco} (Luigi), {\sc Nicoletti} (Giorgio), 
{\sc Piras} (Francesco) --- \\
Representative functions on the algebra of polynomials in infinitely many
variables

\item
{\sc Dress} (Andreas W. M.), {\sc Flemmenkamp} (A.) --- \\
Endliche $\{0,1\}$-Sequenzen mit partieller Translations-Invarianz

\item
{\sc Duchet} (Pierre) --- \\
La convexit\'e dans les structures combinatoires

\item
{\sc D\"ur} (Arne), {\sc Oberst} (Ulrich) --- \\
Operations of the additive group on the affine line and umbral calculus

\item
{\sc Grabmeier} (Johannes) --- \\
Kombinatorische Probleme aus der 
Darstellungstheorie der $Gl_m(k)$

\item
{\sc Poupard} (Ives) --- \\
Arbres d'Andr\'e, nombres de Carlitz et d'Etringer


\item
{\sc De Soete} (Marijke) --- \\
A coordinization of generalized quadrangles of
order $(s - 1, s + 1)$
\end{itemize}



\section
{\bf 13\`eme Session, 22.-26.9.1985, Terme di Castel San Pietro}

Organisateur, \'editeur:
Giorgio {\sc Nicoletti} (Bologna)

Conf\'erenciers invit\'es:
\begin{itemize}
\item
Dominique {\sc Dumont} (Strasbourg) ---

\item
Luigi {\sc Pezzoli} (Bologna) ---
Teoria delle matroidi sugli insiemi parzialmente ordinati

\item
Volker {\sc Strehl} (Erlangen) ---
Combinatorics of Jacobi-configurations
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Barnabei} (Marilena), {\sc Brini} (A.) --- \\
Semistandard Monomials and Invariant Theory

\item
{\sc Barnabei} (Marilena), {\sc Brini} (A.) --- \\
Symmetrized Bideterminants on Skew Shapes

\item
{\sc Bonetti} (F.), {\sc Civolani} (N.) --- \\
Some Operations on Tolerances

\item
{\sc Bressoud} (David M.) --- \\
Comments on the Proof of the $q$-Dyson Theory

\item
{\sc Dumont} (Dominique) --- \\
Pics de cycles et d\'eriv\'ees partielles

\item
{\sc Jones} (Gareth A.) --- \\
Operations on Maps and Hypermaps

\item
{\sc Kreweras} (Germain) --- \\
Comparaison de deux d\'ecompositions sym\'etriques des
nombres d'Andr\'e

\item
{\sc Paule} (Peter) --- \\
\"Uber die Inversionsstatistiken von MacMahon und
Goulden-Jackson

\item
{\sc Pezzoli} (Luigi) --- \\
Teoria delle matroidi sugli insiemi parzialmente ordinati

\item
{\sc Pirillo} (Giuseppe) --- \\
Sulla finitezza dei semigruppi periodici e di tipo
$(m,G)$

\item
{\sc Sperber} (Helmut) --- \\
Finite Automata Accepting Animals and Lower Sets

\item
{\sc Strehl} (Volker) --- \\
Combinatorics of Jacobi-Configurations II: A Rationsl
Approximation via Matching Polynomials

\item
{\sc Zagaglio} (Norma) --- \\
On quasi-$g$-Circulant Matrices

\item
{\sc Kewerlienco} (B.), {\sc Barnabhofer} (P. P. R.) --- \\
A Tentative Answer to the Castel S. Pietro Problem
\end{itemize}


\section
{\bf 14\`eme Session, 13.-16.5.1986, Burg Feuerstein, Oberfranken} 

Organisator, Herausgeber: Volker {\sc Strehl} (Erlangen)

Eingeladene Vortr\"age
\begin{itemize}
\item
David M. {\sc Bressoud} (Penn State) ---
Constant term identities

\item
Michael {\sc Clausen} (Karlsruhe) ---
Kombinatorische Strukturen in Polynomringen

\item
G\'erard X. Viennot (Bordeaux) ---
La combinatoire bijective par l'exemple
\end{itemize}

Actes du s'eminaire:

\begin{itemize}
\item
{\sc Bressoud} (David M.) --- \\
Constant Term Identities

\item
{\sc Clausen} (Michael) --- \\
Kombinatorische Strukturen in Polynomringen

\item
{\sc Dumont} (Dominique), {\sc Kreweras} (Germain) --- \\
Sur le d\'evelopment d'une fraction continue li\'ee \`a la s\'erie
hyperg\'eom\'etrique et son interpr\'etation en termes de records et anti-
records dans les permutations

\item
{\sc Habsieger} (Laurent) --- \\
Note sur un algorithme de Zeilberger

\item
{\sc Jones} (Gareth) --- \\
Enumerating regular maps and normal subgroups of the
modular group

\item
{\sc Kirschenhofer} (Peter), {\sc Tichy} (Robert) --- \\
Gleichverteilte Folgen auf diskreten R\"aumen

\item
{\sc Lascoux} (Alain) --- \\
Interpolation de Lagrange

\item
{\sc Laue} (Reinhard) --- \\
Abbildungen und Algorithmen

\item
{\sc Rawlings} (Don) --- \\
The ABC's of classical enumeration

\item
{\sc Wolff} (Karl-Erich) --- \\
Zur kombinatorischen Bedeutung der Perron-
Frobenius-Projektion \\

\end{itemize}

\subsection{\bf Suppl\'ement 14\`eme Session}

\begin{itemize}
\item
{\sc Arques} (Didier) --- \\
Enumeration des cartes de genre un

\item
{\sc Bergeron} (Francois) --- \\
Une combinatoire du pl\'ethysme

\item
{\sc Decoste} (H\'el\`ene) --- \\
$q$-analogues en th\'eorie des esp\`eces

\item
{\sc Dress} (Andreas), {\sc Siebeneicher} (Christian) --- \\
The cyclotomic
identity and the cyclic group

\item
{\sc D\"ur} (Arne) --- \\
The Automorphism group of Reed-Solomon codes

\item
{\sc Gilllis} (J.), {\sc Jedwab} (J.), {\sc Zeilberger} (Doron) --- \\
A combinatorial interpretation of the integral of the product of Legendre
polynomials

\item
{\sc Kerber} (Adalbert) --- \\
On the basic problem of P\'olya's theory
of enumeration

\item
{\sc Labelle} (Gilbert) --- \\
Interpolation dan les $K$-esp\`eces

\item
{\sc Lefmann} (Hanno) --- \\
An Erdos-Rado theorem for Baire mappings

\item
{\sc Pirillo} (Giuseppe) --- \\
On Hales-Jewett's theorem
\end{itemize}


\section
{\bf 15`eme Session, 9.-11.10.1986, 
Schloss Schney/Lichtenfels, Oberfranken} 

Organisator, Herausgeber: Adalbert {\sc Kerber} (Bayreuth)

Eingeladene Vortr\"age:
\begin{itemize}
\item
Gerd {\sc Baron} (Wien) ---
Rechnen mit der Feder und auf der Linien

\item
Andreas {\sc Dress} (Bielefeld) ---
Periodische Pflasterungen

\item
Arne {\sc D\"ur} (Innsbruck) ---
M\"obius-Funktionen, Inzidenzalgebren und Potenzreihendarstellungen
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Baron} (Gerd) --- \\
Ein Problem vom Erd\"os-Typus

\item
{\sc Cerlienco} (Luigi), {\sc Murru} (Orlando) --- \\
Remarks on the symbolic method in invariant theory of binary forms

\item
{\sc Degen} (Wolfgang) --- \\
Set theory and infinitary binomial coefficients

\item
{\sc D\'esarm\'enien} (Jaques) --- \\
La d\'emonstration des identit\'es de Gordon et
MacMahon et de deux identit\'es nouvelles

\item
{\sc D\"ur} (Arne) --- \\
M\"obius-Funktionen, Inzidenzalgebren und Potenzreihendar-
stellungen

\item
{\sc Foata} (Dominique) --- \\
Permutations color\'ees et tableaux gauches

\item
{\sc Kern} (Walter), {\sc Wanka} --- \\
On a problem about covering lines by squares

\item
{\sc K\"onig} (Roman) --- \\
Untermonoide freier Monoide

\item
{\sc Laue} (Reinhard) --- \\
Zugriffsstrategien f\"ur Gendatenbanken

\item
{\sc L\"uneburg} (Heinz) --- \\
Addieren ohne \"Ubertrag

\item
{\sc Pirillo} (Giuseppe) --- \\
Sulle propriet\`a $P e P^*$ nei semi-gruppi

\item
{\sc Pr\"omel} (Hans J\"urgen) --- \\
Aspects of asymptotic graph theory

\item
{\sc R\"utsch} (Ursula) --- \\
Optimale Matsching Forests

\item
{\sc Triesch} (Eberhard) --- \\
Kantensuche in Graphen

\item
{\sc Zeng} (Jian) --- \\
Pfaff-Saalsch\"utz revisited

\item
{\sc Zeng} (Jiang) --- \\
Records, antirecords et permutations discordantes
\end{itemize}


\section
{\bf 16\`eme Session, 11.-14.3.1987, Liebfrauenberg/Goersdorf, Alsace}

Organisateur, \'editeur: Dominique {\sc Foata} (Strasbourg)

Conf\'erenciers invit\'es:
\begin{itemize}
\item
Daniel I.A. {\sc Cohen} (New York) --- On the four color problem

\item
Philippe {\sc Flajolet} (Paris) ---
Asymptotique et Combinatoire
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Azzena} (Luigi), {\sc Piras} (Francesco) --- \\
The duality between incidence algebras and coalgebras. A few remarks

\item
{\sc Cohen} (Daniel I.A.), {\sc Miller} (Victor S.) --- \\
On the four color problem

\item
{\sc Cohen} (Danial I.A.), {\sc Miller} (Victor S.) --- \\
Obtaining generating functions from ordered-partition reccurrence formulas

\item
{\sc Foata} (Dominique), {\sc Zeilberger} (Doron) --- \\
Linearization coefficients for the Jacobi polynomials

\item
{\sc Kr\"auter} (Arnold Richard) --- \\
Einige Bemerkungen \"uber die L\"osungen der 
Gleichung per$(zI - A)=0$

\item
{\sc Labelle} (Jacques), {\sc Yeh} (Yeong Nan) --- \\
A combinatorial model for Hahn ponynomials

\item
{sc Pirillo} (Giuseppe) --- \\
On $\omega$-ramseyan semigroups

\item
{\sc Pirillo} (Giuseppe) --- \\
Su alcune propriet\`a dei semigruppi finiti

\item
{\sc Strehl} (Volker) --- \\
Anmerkungen zu einer Anzahlformel von G. Kreweras 
f\"ur numerierte Wurzelb\"aume

\item
{\sc Wenzel} (Walter) --- \\
The Tutte-group of a matroid

\item
{\sc Zagaglia Salvi} (Norma) --- \\
On the point-distinguishing chromatic index of $K_{n,n}$
\end{itemize}

\section
{\bf 17\`eme Session, 27.-30.5.1987, 
Eremo SS. Pietro e Paolo/Bienno}

Organisateur, \'editeur: Dominique {\sc Foata} (Strasbourg)

Conf\'erenciers invit\'es:

\begin{itemize}
\item
Ira {\sc Gessel} (Waltham) ---
Enumerative applications of symmetric functions

\item
Andr\'e {\sc Galligo} (Nice) ---
Th\'eorie d'\'elimination et bases de Gr\"obner
\end{itemize}

Actes du s\'emiaire:

\begin{itemize}
\item
{\sc Brlek} (Sr\v{e}cko) --- \\
On word chains

\item
{\sc Clausen} (Michael), {\sc Grabmeier} (Johannes) --- \\
Computation on standard bases of $S_n$-modules corresponding to $n$-subsets
of ${\bf N}^2$

\item
{\sc Gessel} (Ira M.) --- \\
Enumerative applications of symmetric functions

\item
{\sc Labelle} (Gilbert) --- \\
D\'eriv\'ees directionnelles et d\'eveloppements de
Taylor combinatoires

\item
{\sc Lex} (Walter) --- \\
Einige Bemerkungen zu Gleichheitstests und deren Komplexit\"at

\item
{\sc Riguet} (Jacques) ---  \\
Cartouche writing of Galois and adjoint pairs and their 
applications for geometrically depicting consequence relations in logics
and in relational data bases

\item
{\sc Strehl} (Volker) --- \\
Endliche Funktionen und spezielle Funktionen: eine
kombinatorische Theorie zu einer Identit\"at von P. Brock und deren
Erweiterungen

\item
{\sc Zeng} (Jiang) --- \\
Lin\'earisation de produits de polyn\^omes de Meixner,
Krawtchouk et Charlier
\end{itemize}

\section
{\bf 18\`eme Session, 27.-30.9.1987, Obsteig/Tirol}

Organisation, Herausgeber: 
Gerd {\sc Baron} und Peter {\sc Kirschenhofer} (Wien)

Eingeladene Vortr\"age:

\begin{itemize}
\item
Werner {\sc Kuich} (Wien) ---
Semirings, automata, and combinatorial applications

\item
Peter {\sc Paule} (Linz) ---
The concept of Bailey chains
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}

\item
{\sc Bergeron} (Fran\c{c}ois), {\sc Labelle} (Gilbert), 
{\sc Leroux} (Pierre) --- \\
Functional Equations for Data Structures

\item
{\sc Gaudier} (Henri) --- \\
Rel\`evment des coefficients binomiaux dans les vecteurs
de Witt

\item
{\sc Kuich} (Werner) --- \\
Semirings, Automata and Combinatorial Applications

\item
{\sc L\"uneburg} (Heinz) --- \\
On a Decomposition of Square Matrices over a Ring

\item
{\sc De Luca} (Aldo), {\sc Varricchio} (Stefano) --- \\
Some Results on the Combinatorics of the Thue-Morse Sequence with Identity

\item
{\sc Oberst} (Ulrich) --- \\
Explizite Rekursionsformeln zur schnellen 
Fouriertransformation

\item
{\sc Oberst} (Ulrich) --- \\
(Co)-homologie von Graphen und Invarianten

\item
{\sc Paule} (Peter) --- \\
The Concept of Bailey Chains \\
\\
{\bf Notes:} \\

\item
{\sc Bruy\`ere} (V\'eronique) --- \\
Factorization of prefix-closed subsets of words

\item
{\sc Dress} (Andreas W.M.), {\sc Wenzel} (Walter) --- \\
Matroids with coefficients

\item
{\sc Drmota} (Michael) --- \\
 Eine kombinatorische Ungleichung

\item
{\sc Guthmannn} (A.) --- \\
Asymptotische Entwicklungen f\"ur unvollst\"andige 
Gammafunktionen

\item
{\sc Jones} (Gareth) --- \\
The Farey Graph

\item
{\sc Kreweras} (Germain) --- \\
Une bijektion explicative de plusieurs propri\'etes
des ponts

\item
{\sc Kurth} (Winfried) --- \\
Some combinatorial properties of complete
semi-Thue systems

\item
{\sc Siebeneicher} (Christian) --- \\
Symmetrische Potenzen zyklischer Mengen
und Produktzerlegungen von erzeugenden Funktionen

\item
{\sc Tichy} (Robert) --- \\
Blockgleichverteilung von Zufallsfolgen

\item
{\sc Wolff} (Karl-Erich) --- \\
Begriffsanalytische Datenauswertung

\end{itemize}


\section
{\bf 19\`eme Session, 22.-25.3.1988, Schloss Schwanberg, Unterfranken}

Organisator, Herausgeber: Volker {\sc Strehl} (Erlangen)

Eingeladene Vortr\"age:

\begin{itemize}
\item
Christian {\sc Choffrut} (Paris) ---
The free partially commutative monoid

\item
Karl-Erich {\sc Wolff} (Darmstadt) ---
Einf\"uhrung in die formale Begriffsanalyse
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Choffrut} (Christian) --- \\
A Remark on the Representation of the Free
Partial Commutative Monoid

{\sc D\'esarm\'enien} (Jacques), {\sc Wachs} (Michelle) --- \\
Descentes des d\'erangements et mot circulaire

\item
{\sc Faigle} (Ulrich) --- \\
Konvergenzverhalten gewisser Markov-Prozesse

\item
{\sc Franz} (Reinhard) --- \\
Zur Abz\"ahlung periodischer Pflasterungen der
euklidischen Ebene

\item
{\sc Guthmann} (Andreas) --- \\
Ramanujans $\tau$-Funktion

\item
{\sc Kerber} (Adalbert) --- \\
Experimentelle Mathematik

\item
{\sc Wolff} (Karl Erich) --- \\
Einf\"uhrung in die Formale Begriffsanalyse

\item
{\sc Zagaglia Salvi} (Norma) --- \\
On the Permanent of Certain Submatrices of 
Circulant $(0,1)$-Matrices

\item
{\sc Zeng} (Jiang) --- \\
Un mod\`ele sym\'etrique poiur l'identit\`e de Al
Salam-Fields 
\end{itemize}


{\bf Kurzbeitr\"age - Abstracts} 

\begin{itemize}
\item
{\sc De Luca} (Aldo) --- \\
On the Existence of a Finite Base for Systems of 
Equations of Infinite Words

\item
{\sc Diekert} (Volker) --- \\
Transitive Orientations, M\"obius Functions,
and Complete Semi-Thue-Systems for Free Partially Cummutative Monoids

\item
{\sc Dress} (Andreas W.M.), {\sc Havel} (T.) --- \\
Beitr\"age zur Frage der globalen Konsistenz lokaler geometrischer
Daten

\item
{\sc D\"ur} (Arne) --- \\
\"Uber die kanonische Form bin\"arer Formen

\item
{\sc Kreweras} (Germain) --- \\
Une remarque sur le probl\`eme de Steiner

\item
{\sc Pirillo} (Giuseppe) --- \\
Sulla propriet\`a die permutabilit\`a nei
gruppi e nei semigruppi

\item
{\sc Tichy} (Robert) --- \\
Graphentheoretische Abz\"ahlprobleme

\item
{\sc Welker} (Volkmar) --- \\
Permutabilit\"aten kleiner endlicher Gruppen

\item
{\sc Wenzel} (Walter) --- \\
Matroidizing Set Systems
\end{itemize}


\section
{\bf 20\`eme Session, 24.9.-1.10.1988, Alghero, Sardegna}

Organisateurs, \'editeurs:
Luigi {\sc Cerlienco} (Cagliari) et Dominique {\sc Foata} (Strasbourg)

Conf\'erenciers invit\'es:

\begin{itemize}
\item
Jean-Pierre {\sc Jouanolou} (Strasbourg) --- 
Th\'eorie de l'\'elimination

\item
Adalbert {\sc Kerber} (Bayreuth) ---
Algebraische Kombinatorik: Anwendung endlicher Gruppenoperationen

\item
I.G. {\sc Macdonald} (London) ---
A new class of symmetric functions
\end{itemize}

Actes du s\'eminaire: 

\begin{itemize}
\item
{\sc Delest} (Marie-Pierre), {\sc Dulucq} (Serge), {\sc Favreau} (Luc) --- \\
An analogue to Robinson-Schensted correspondence for oscillating tableaux

\item
{\sc D\'esarm\'enien} (Jacques), {\sc Foata} (Dominique) --- \\
Statistiques d'oprdre sur les permutations color\'ees

\item
{\sc Dress} (Andreas), {\sc Siebeneicher} (Christian) --- \\
Ein Lemma \"uber Perlenketten

\item
{\sc Duchet} (Pierre) --- \\
$n^{n-2}$

\item
{\sc Ghinelli} (Dina) --- \\
A rational congruence for a standard orbit 
decomposition

\item
{\sc Hofmann} (Peter) --- \\
Littlewood-Richardson without algorithmically
defined bijections

\item
{\sc Kr\"auter} (Arnold Richard) --- \\
Maximale Permanenten von (1,-1)-Matrizen
mit beliebigem Rang

\item
{\sc Lascoux} (Alain), {\sc Sch\"utzenberger} (Marcel-Paul) --- \\
Ar\^etes et 
tableaux

\item
{\sc Macdonald} (I.G.) --- \\
A new class of symmetric functions

\item
{\sc Strehl} (Volker) --- \\
A combinatorial proof of Louck's conjecture

\item
{\sc Zeng} (Jian) --- \\
La $\beta$-extension de la formule d'inversion de
Lagrange \`a plusieurs variables
\end{itemize}

\section
{\bf 21\`eme Session, 8.-10.5.1989, Schloss Thurnau/Oberfranken}

Organisator, Herausgeber: Adalbert {\sc Kerber} (Bayreuth)

Eingeladene Vortr\"age:
\begin{itemize}
\item
Pierre {\sc Cartier} (Paris) ---
Nouvelles aventures au pays des q-analogues

\item
W. {\sc M\"uller} (Bayreuth) ---
Geometrische Ornamente in der Islamischen Kunst
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Bouchard} (Pierre). {\sc Ouellette} (Mario) --- \\
D\'ecomposition arborescente de Mario Ouellette 
pour les esp\`eces de structure

\item
{\sc Dress} (Andreas), {\sc Grabmeier} (Johannes) --- \\
On zero-testing and interpolation of sums of characters

\item
{\sc Dress} (Andreas), {\sc Siebeneicher} (Christian) --- \\
Zur Abz\"ahlung periodischer Worte

\item
{\sc Dress} (Andreas), {\sc Wenzel} (Walter) --- \\
The Tutte-group of projective spaces

\item
{\sc Gaudier} (Henri) --- \\
Multiplication des matrices et vecteurs de Witt

\item
{\sc Guthmann} (Andreas) --- \\
Kettenbr\"uche und Divisoren in reell-quadratischen
Erweiterungen von $GF(q)[T]$

\item
{\sc K\"onig} (Roman) --- \\
\"Uber partiell kommutative Monide

\item
{\sc Labelle} (Gilbert) --- \\
Le d\'enombrement de structures ansym\'etriques

\item
{\sc Leeb} (Klaus) --- \\
Les ramifications des suites r\'ecurrentes non-p\'eriodiques

\item
{\sc Lefmann} (Hanno) --- \\
Extremalprobleme in Verb\"anden

\item
{\sc Lefmann} (Hanno) --- \\
Partitionsregul\"are Gleichungssysteme

\item
{\sc Meyn} (Helmut), {\sc G\"otz} (Werner) --- \\
Self-reciprocal polynomials over finite fields

\item
{\sc M\"uller} (W.) --- \\
Geometrische Ornamente in der islamischen Kunst

\item
{\sc Reutenauer} (Christian) --- \\
Number of permutations with given descent set
and cycle structure

\item
{\sc Sillke} (Torsten) --- \\
Zur Kombinatorik von Permutationen

\item
{\sc Vogel} (Ursula) --- \\
Konstruktion aufl\"osbarer Fast-Blockpl\"ane mit Hilfe
eines Computers

\item
{\sc Wanka} (Alfred) --- \\
On first experiences with the implementation of a Newton 
based linear programming approach

\item
{\sc Welker} (Volkmar) --- \\
\"Uber die M\"obiuszahl des Verbands der Untergruppe einer
endlichen aufl\"osbaren Gruppe
\end{itemize}


\section
{\bf 22\`eme Session, 28.-30.9.1989, Hesselberg/Gerolfingen, Mittelfranken}

Organisator, Herausgeber: Roman {\sc K\"onig} (Erlangen)

Eingeladener Vortrag:
\begin{itemize}
\item
Volker {\sc Diekert} (M\"unchen) --- Combinatorial rewriting on traces
\end{itemize}

Actes du S\'eminaire:

\begin{itemize}
\item
{\sc Barnabei} (Marilena), {\sc Frontini} (V.), {\sc Sgallari} (F.) --- \\
An algorithm for Weyl modules irreducibility

\item
{\sc Cerlienco} (Luigi), {\sc Piras} (Francesco) --- \\
Sulla bialgebra duale della bialgebra dei polinomi in pi\`u variabili

\item
{\sc D\'esarm\'emien} (Jacques) --- \\
\'Etudes modulo $n$ des statistiques mahoniennes

\item
{\sc Diekert} (Volker) --- \\
Combinatorial rewriting on traces

\item
{\sc Dumont} (Dominique) --- \\
R\'esidus quadratiques et nomres de classes

\item
{\sc Franz} (Reinhard), {\sc Huson} (Daniel) --- \\
The classification of quasi-regular polyhedra of genus 2

\item
{\sc Goralcik} (Pavel) --- \\
Avoidable words and lattice universal semigroup varieties

\item
{\sc Klotz} (Walter), {\sc Lex} (Wilfried) --- \\
Nochmals Gleichheitstest

\item
{\sc Penaud} (Jean-Guy) --- \\
Une nouvelle bijection pour les animaux dirig\'es

\item
{\sc Pirillo} (Giuseppe) --- \\
Permutabilit\'a e propriet\'a combinatoire delle
parole infinite su unalfabeto finito

\item
{\sc Pirillo} (Giuseppe) ---  \\
Su alcune recenti generalizzazioni del teorema di Shirshov

\item
{\sc Riguet} (Jean) --- \\
Galois correspondences in category theory

\item
{\sc Spangenberg} (Norbert). {\sc Wolff} (Karl Erich) --- \\
Comparison between principal component analysis  and formal concept analysis
of repertory grids

\item
{\sc Thumser} (Wolfgang) --- \\
On the growth rate of certain combinatorial
functions

\item
{\sc Wenzel} (Walter), {\sc Dress} (Andreas W.M.) --- \\
Valuated matroids --- a new look at the greedy algorithm
\end{itemize}


\section
{\bf 23\`eme Session, 21.-24.1.1990, Rouge Gazon, Saint-Maurice-sur-Moselle}

Organisateur, \'editeur: Dominique {\sc Foata}, Strasbourg

\begin{itemize}
\item
{\sc Cartier} (Pierre) --- \\
Nouvelles aventures au pays des q-analogues
(\'equation de Yang-Baxter)

\item
{\sc Foata} (Dominique), {\sc Zeilberger} (Doron) --- \\
Combinatorial Proofs of Cappelli's and Turnbull's identities from Classical
Invariant Theory

\item
{\sc Delest} (Marie-Pierre), {\sc Fedou} (Jean-Marc) --- \\
Enumeration of skew Ferrers diagrams

\item
{\sc Dumont} (Dominique) --- \\
Mariages stables

\item
{\sc Gardy} (Dani\`ele), {\sc Gouyou-Beauchamps} (Dominique) --- \\
Enumeration of some Davenport-Schinzel sequences
\end{itemize}


\section
{\bf 24\`eme Session, 6.-9.5.1990, Liebfrauenberg/Alsace}

Organisateur, \'editeur: Dominique {\sc Foata}, Strasbourg

Conf\'erencier invit\'e:
\begin{itemize}
\item
{\sc Zeilberger} (Doron) --- \\
Three Recitations on Holonomic Systems and
Hypergeometric Series
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Cerlienco} (Luigi), {\sc Mureddu} (Marina) --- \\
Algoritmi combinatori per l'interpolazione polinomiale in dimensione $\geq 2$

\item
{\sc Dumont} (Dominique), {\sc Zeng} (Jian) --- \\
A note on the Euler and Genocchi numbers

\item
{\sc Han} (Guo-Niu) --- \\
Escaliers \'evalu\'es et nombres classiques

\item
{\sc Zeilberger} (Doron) --- \\
Three Recitations on Holonomic Systems and
Hypergeometric Series

\item
{\sc Zeng} (Jiang) --- \\
The $q$-Stirling numbers, continued fractions and
the $q$-Charlier and $q$-Laguerre polynomials
\end{itemize}


\section
{\bf 25\`eme Session, 16.-19.9.1990, Salzburg/\"Osterreich}

Organisation, Herausgeber: Arnold {\sc Kr\"auter}, Leoben

Eingeladene Vortr\"age:
\begin{itemize}
\item
{\sc Andrews} (George E.) ---
Three Aspects of Partitions

\item
{\sc Kirschenhofer} (Peter) ---
Enumeration of trees
\end{itemize}

Actes du S\'eminaire:

\begin{itemize}
\item
{\sc Andrews} (George E.) --- \\
Three Aspects of Partitions

\item
{\sc Baron} (Gerd E.), {\sc Drmota} (Michael) --- \\
Die Komponentenverteilung von ges\"attigten Teilgraphen in Baumfamilien


\item
{\sc D\'esarmenien} (Jacques) --- \\
Cons\'equences \'enum\'eratives de la 
sym\'etrie des fonctions de Schur

\item
{\sc Dress} (Andreas), {\sc Siebeneicher} (Christian), {\sc Yoshida}
(Tomoyuki) --- \\
Applications of Burnside Rings in Elementary Group Theory

\item
{\sc Dulucq} (Serge), {\sc Favreau} (Luc) --- \\
Un mod\'ele combinatoire pour les polyn\^omes de Bessel

\item
{\sc Formisano} (Maria Rosaria) --- \\
Sul numero delle parole senza quadrati 
parzialmente abeliani per un alfabeto di tre lettere

\item
{\sc Hebisch} (Udo), {\sc Lex} (Wilfried) --- \\
Ordnungen nichtkommutativer Ringe

\item
{\sc Kirschenhofer} (Peter) --- \\
Enumeration of trees

\item
{\sc Krattenthaler} (Christian), {\sc Mohanty} (S.G.) --- \\
On lattice path counting by major and descents

\item
{\sc Kreweras} (Germain) --- \\
Sur les polyn\^omes de Catalan multiples

\item
{\sc Lalanne} (Jean-Claude) --- \\
$q$-Bessel et polynominos

\item
{\sc Laue} (Reinhard) --- \\
Konstruktion endlicher aufl\"osbarer Gruppen

\item
{\sc L\"uneburg} (Heinz) --- \\
Fibonaccis aufsteigende Kettenbr\"uche, ein
elegantes Werkzeug mittelalterlicher Rechenkunst

\item
{\sc Pirillo} (Giuseppe) --- \\
Sul teorema di Shirshov e sui semigruppi ripetitivi

\item
{\sc Winhandl} (H.), {\sc Werner} (E.) --- \\
Two-coloring of the plane

\item
{\sc Wolf} (Reinhard) \\
Die Rendezvous-Zahl eines endlichen, zusammenh\"angenden
Graphen

\end{itemize}

\section
{\bf 26\`eme Session, 3.-6.3.1991, Schloss Thurnau, Oberfranken}

Organisation und Herausgeber : Adalbert {\sc Kerber}, Bayreuth

Eingeladene Vortr\"age:
\begin{itemize}
\item
Michail {\sc Klin} (Moskau) --- 
Cellular Rings, Theory and Applications

\item
J.J. {\sc Seidel} (Eindhoven)  --- 
Introduction to Association Schemes
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Degen} (J. Wolfgang) --- \\
Some contributions to the model theory of monounaries

\item
{\sc Drmota} (Michael) --- \\
Kerne und Grundfunktionen auf B\"aumen

\item
{\sc Florek} (W.), {\sc Lulek} (T.) --- \\
Combinatorial analysis of magnetic configurations

\item
{\sc Fripertinger} (Harald) --- \\
Enumeration in Musical Theory

\item
{\sc Hirschelmann} (Arnold) --- \\
Ein Evolutionsspiel im Partitionengraph

\item
{\sc Krause} (H.) --- \\
Endomorphisms of words in a quiver

\item
{\sc Lulek} (T.) --- \\
Impurities in the Heisenberg magnet and the general receipe of Weyl

\item
{\sc Lulek} (T.), {\sc Florek} (W.) --- \\
Gauge symmetries in the Heisenberg model of a magnet

\item
{\sc Pirillo} (Giuseppe) --- \\
Properties of integers and finiteness conditions
for semigroups

\item
{\sc Seidel} (J.J.) --- \\
Introduction to Association Schemes

\item
{\sc Spangenberg} (N.), {\sc Wolff} (Karl-Erich) --- \\
Interpretation von Mustern in Kontexten und Begriffsverb\"anden

\item
{\sc Wenzel} (Walter) --- \\
$\Delta$-matroids and Pfaffian forms
\end{itemize}

\section
{\bf 27\`eme Session, 3.-5.7.1991, Hesselberg, Mittelfranken}

Organisation, Herausgeber: 
Roman {\sc K\"onig} und Volker {\sc Strehl}, Erlangen

Eingeladene Vortr\"age:
\begin{itemize}
\item
Shreeram S. {\sc Abhyankar} (West Lafayette) --- 
Combinatorics and Young Tableaux

\item
George F. {\sc McNulty} (Columbia) ---
Avoidable Patterns in Strings
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Arqu\`es} (Didier), {\sc Jacques} (Isabelle), 
{\sc Orieux} (Karine) --- \\
\`Equations fonctionnelles liant la s\'erie g\'en\'eratrice 
des cartes planaires \'a celle des mots de Dyck

\item
{\sc Constantineau} (Ivan) --- \\
Sur le nombre de graphes connexes fix\'es
par l'action d'une permutation donn\'ee

\item
{\sc Duchamp} (G\'erard) --- \\
E\'limination de g\'en\'erateurs dans les
structures partiellement commutatives

\item
{\sc Kohnert} (Axel) --- \\
The use of Schubert plynomials in {\sc symchar}

\item
{\sc L\"uneburg} (Heinz) --- \\
Was machte Nicolo Tartaglia in der Nacht zum
Aschermittwoch des Jahres 1523 in Verona?

\item
{\sc Schmalz} (Bernd) --- \\
Block designs with prescribed automorphisms group

\item
{\sc Zimmermann} (Karl-Heinz) --- \\
\"Uber Spechtmoduln als lineare Codes

\end{itemize}
 
 
\section
{\bf 28\`eme Session, 15.-18.3.1992, Saint Nabor/Ottrott, Alsace}

\'Editeur: Jiang {\sc Zeng}, Strasbourg

Conf\'erenciers invit\'es:
\begin{itemize}
\item
Michel {\sc Lassalle} (Bordeaux) --- 
Formules de Pieri et formule du bin\^ome g\'en\'eralis\'ees

\item
I.G. {\sc Macdonald} ---
Schur Functions: Theme and Variations
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Chu} (Weng Chang) --- \\
A new proof for a terminating ``strange'' hypergeometric
evaluation of Gasper and Rahman

\item
{\sc Dress} (Andreas), {\sc Siebeneicher} (Christian) ---\\
On the integrality of the Witt
polynomials

\item
{\sc Dulucq} (Serge) ---\\
Un $q$-analogue des polyn\^omes de Bessel

\item
{\sc Gaudier} (Henri) ---\\
Matrices et tableaux semi-standard

\item
{\sc Helversen-Pasotto} (Anna) ---\\
\"Uber Identit\"aten von Charaktersummen

\item
{\sc Macdonald} (I.G.) ---\\
Schur Functions: Theme and Variations

\item
{\sc De M\'edicis} (Anne), {\sc Viennot} (G. Xavier) --- \\
Moments des $q$-polyn\^omes de Laguerre et la bijection de Foata-Zeilberger

\item
{\sc Picon} (Pierre-Andr\'e) ---\\
Int\'egrit\'e de certains produits-quotients de
factorielles

\item
{\sc Radoux} (Christian) ---\\
D\'eterminants de Hankel et th\'eor\`eme de Sylvester

\item
{\sc Stanton} (Dennis) ---\\
Specializations of generalized Laguerre polynomials

\item
{\sc Sz\'ekely} (L.A.), {\sc Erd\"os} (P.L.), {\sc Steel} (M.A.) --- \\
the combinatorics of evolutionary trees-a survey
\end{itemize}

\section
{\bf 29\`eme Session, 20.-23.9.1992, Thurnau, Oberfranken}

Organisator, Herausgeber: Adalbert {\sc Kerber} (Bayreuth)

Eingeladener Vortrag:
\begin{itemize}
\item
Hartmut {\sc Laue} (Kiel) --- 
Algebraic Combinatorics Related to the Free Lie Algebra
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Blessenohl} (D.), {\sc Laue} (Hartmut) --- \\
Algebraic Combinatorics Related to the Free Lie Algebra

\item
{\sc Chu} (Weng Chang) \\
Inverse Series Relations, Formal Power Series and
Blodgett-Gessel's Type Binomial Identities

\item
{\sc Gutjahr} (W.J.), {\sc Pflug} (G.C.) --- \\
Average Execution Time of Series; Parallel Networks

\item
{\sc Hofmeister} (M.) --- \\
Combinatorial aspects of an exact sequence that
is related to a graph

\item
{\sc Krattenthaler} (Christian) --- \\
The Major Counting of Nonintersecting 
Lattice-Paths and Generating Functions for Tableaux

\item
{\sc Ku\'zma} (M.), {\sc Lulek} (T.) --- \\
Mac Lane Method of Construction and Classification of Extensions of Cyclic 
Groups by their Automorphism Groups

\item
{\sc Scheerhorn} (Alfred) --- \\
Spur-kompatible Polynomfolgen \"uber endlichen
K\"orpern

\item
{\sc Strehl} (Volker) --- \\
Recurrences and Legendre Transform

\end{itemize}


\section
{\bf 30\`eme Session, 8.-10.2.1993, Hesselberg/Gerolfingen, Mittelfranken}

Organisatoren, Herausgeber: Roman {\sc K\"onig} et Volker {\sc Strehl}

Eingeladene Vortr\"age
\begin{itemize}
\item
Jean-Paul {\sc Allouche} (Bordeaux) --- 
Finite automata and arithmetic

\item
G\"unter {\sc Ziegler} (Berlin) --- 
Recent progress on polytopes
\end{itemize}

Actes du s\'eminaire:

\begin{itemize}

\item
{\sc Allouche} (Jean-Paul) --- \\
Finite automata and arithmetic

\item
{\sc Dulucq} (Serge), {\sc Gire} (Sophie), {\sc Guibert} (0.), {\sc West} 
(Julian) --- \\
\'Enumeration de permutations \`a motifs exclus

\item
{\sc Gernert} (Dietrich) --- \\
Partial proofs of Thomassen's conjecture

\item
{\sc Grabner} (Peter J.)  --- \\
A note on the parity if the sum-of-digits
function

\item
{\sc Jaeger} (Fran\c{c}ois) --- \\
Mod\`eles \`a spin, invariants d'entrelacs,
et schemas d'association

\item
{\sc Krattenthaler} (Christian) \\
HYP and HYPQ. {\em Mathematica} packages
for the manipulation of binomial sums and hypergeometric series resp. 
q-binomial sums and basic hypergeometric series

\item
{\sc Pirillo} (Giuseppe) \\
Fibonacci numbers and words

\item
{\sc Prodinger} (Helmut) \\
Combinatorial problems related to geometrically
distributed random variables

\item
{\sc Randrianarivony} (Arthur), {\sc Zeng} (Jian) \\
Sur une extension des
nombres d'Euler et les records des permutations alternantes

\item
{\sc Rawlings} (Don) \\
Probabilistic interpretations of q-analogues

\item
{\sc Wen} (Zhi-Xiong), {\sc Wen} (Zhi-Ying) \\
Some properties of the
Singular words of the Fibonacci Word

\end{itemize}


\section
{\bf 31\`eme Session, 17.-20.10.1993, Saint-Nabor/Ottrott, Alsace}

Organisateur, \'Editeur: Jiang {\sc Zeng}, Strasbourg

Actes du s\'eminaire:

\begin{itemize}
\item
{\sc Barcucci} (E.), {\sc Del Lungo} (A.), {\sc Pinzani} (R.), {\sc Sprugnoli} 
(R.) --- \\
La hauteur des polynominos dirig\'es verticalement convexes

\item
{\sc Barnabei} (Marilena), {\sc Nicoletti} (Giorgio), {\sc Pezzoli} (L.) --- \\
The symmetric exchange property for poset matroids

\item
{\sc Delest} (Marie-Pierre), {\sc Dubernard} (J.), {\sc Dutour} (I.) --- \\
Polynomions parallelogrammes, coins et mots de Motzkin

\item
{\sc Carr\'e} (Christophe), {\sc Leclerc} (Bernard) --- \\
Tableaux de dominos, fonctions H et pl\'ethysmes

\item
{\sc Duchamp} (G\'erard) --- \\
Identit\'e cyclotomique, superalg\`ebres de Lie et bicaract\`eres

\item
{\sc Han} (Guo-Niu) --- \\
Une version g\'eom\'etrique de la construction de 
Kerov-Kirillov-Reshetkhin

\item
{\sc Picon} (Pierre-Andr\'e) --- \\
Conservation of the integrality of certain quotients
by iterated substitutions of Lucas numbers

\item
{\sc Pirastu} (Roberto) --- \\
A note on the minimality problem in indefinite
summation of rational functions

\item
{\sc Randrianarivony} (Arthur), {\sc Zeng} (Jiang) --- \\
Une famille de polyn\^omes
qui interpole plusieurs suites classiques de nombres

\end{itemize}


\end{document}
