At beginning of the meeting, Volker Strehl gave us an hommage of our dear Lotharingien Pierre LEROUX (1942-2008), who had attended numerous meetings of the Séminaire Lotharingien de Combinatoire, and who had also planned to attend this one, which however was made impossible by his untimely death on March 9, 2008. Volker Strehl reminded us of Pierre's enthousiasm for mathematics, canooing, skiing, nature, and how he has thus been a source of energy for all of us, not at least by his extremely encouraging character. Subsequently, Gérard Duchamp read a passionate poem written by Xavier Viennot, which was followed by moments of silence.

Subsequently, the participants enjoyed a rich scientific program, inspiring discussions, and placid evenings in the bar area of the Erwachseneninstitut.

The series of main lectures was given by

Unfortunately, Anders BJÖRNER, who was supposed to give the second series of main lectures, had to cancel in the last moment because of a serious influenza. I must, in the name of all participants, thank particularly Dominique FOATA, Ron KING and Peter PAULE, who stepped in at very short notice, and gave us extremely interesting and beautiful one hour lectures.

**Alessandro CONFLITTI**: *Noncommutative hypergeometric and basic hypergeometric
differential equations over an abstract unital Banach algebra*

**Gérard DUCHAMP**: *Combinatorial physics*

**Dominique FOATA**: *Descents and decreases*, and the *Wittgenstein Preis*

**Sven HERRMANN**: *Genocchi numbers and f-vectors of simplicial balls*

**Jang Soo KIM**: *A combinatorial proof for the largest power of 2 in the number of
involutions*

**Ron KING**: *Littlewood-Richardson coefficients and the hive model*

**Martina KUBITZKE**: *Lefschetz algebras and Eulerian numbers*

**Philippe NADEAU**: *Bijections for Permutation tableaux*

**Ricardo MAMEDE**: *Identical bijections on the conjugation property of
Littlewood-Richardson fillings*

**Peter PAULE**: *Plane partitions: MacMahon's dream has come true!*

**Laurent POINSOT**: *On the group of substitutions with prefunctions occurring in the
boson normal ordering problem*

**Martin RUBEY**: *Self-avoiding walks in wedges and crossings in matchings and permutations*

**Flavia STAN**: *An algorithmic approach to recurrences for a general class of multiple
contour integrals of Barnes type*

**Christian STUMP**: *A bijection between non-nesting and non-crossing
partitions of types A and B preserving interesting statistics*

**Jiang ZENG**: *Euler's q-difference table for the wreath product of a
cyclic group and a symmetric group*

- Olga Azenhas (Coimbra)
- Fabrizio Caselli (Bologna)
- Alessandro Conflitti (Coimbra)
- Mihai Ciucu (Bloomington, Atlanta)
- Gérard Duchamp (Paris)
- Theresia Eisenkölbl (Lyon)
- Ilse Fischer (Wien)
- Dominique Foata (Strasbourg)
- Christian Gutschwager (Hannover)
- Sven Herrmann (Darmstadt)
- Qing-hu Hou (Tianjin, Linz)
- Masao Ishikawa (Tottori)
- Jang Soo Kim (KAIST, Daejon)
- Ron King (Southampton)
- Peter Kirschenhofer (Leoben)
- Roman König (Erlangen)
- Christian Krattenthaler (Wien)
- Martina Kubitzke (Marburg)
- Philippe Nadeau (Wien)
- Ricardo Mamede (Coimbra)
- Peter Paule (Linz)
- Laurent Poinsot (Paris)
- Martin Rubey (Wien)
- Heesung Shin (Lyon)
- Flavia Stan (Linz)
- Volker Strehl (Erlangen)
- Christian Stump (Wien)
- Itaru Terada (Tokyo)
- Jean-Yves Thibon (Marne-la-Vallée)
- Christophe Tollu (Paris)
- Jiang Zeng (Lyon)