Combinatorial Software and Databases


General

Combinatorial Structures

See also: devmol.

Permutation Groups, Group Actions, Redfield-Pólya Theory

See also: devmol.

Enumeration of Tilings and Perfect Matchings

Posets

Graphs

See also: MOLGEN.

Matroids

Designs

Identify Your Sequence Knowing The First Few Terms

See also: gfun.

Generating Functions, holonomic functions

Binomial and Hypergeometric Series, Special Functions

Implementations of the Gosper-Zeilberger Algorithm
See also: gfun, Mgfun.
Summation algorithms based on difference fields
Other recurrence finders
Implementations of the Petkovsek Algorithm
Multisum Algorithms
Special Functions Databases
Orthogonal Polynomials

Asymptotic Enumeration

Symmetric Functions, Schubert Polynomials, Combinatorial Representation Theory

Computations with Polynomials, Commutative Algebra

Coxeter and Weyl Groups

Polytopes and Simplicial Complexes

Algorithms in Operations Research

Miscellaneous