# Presentation

Welcome on the webpage of the *Combi team* of the LIX laboratory of École polytechnique.

Our team focuses on several aspects of combinatorics, in particular through their interactions with other scientific and technological fields.

- We study
*combinatorial models*issued from- IT (data structures, meshes, etc.) ;
- physics (sandpiles, quantum gravity, etc.) ;
- mathematics (words, trees, maps, polytopes, cluster algebras, etc.).

- We use and develop
*tools*from- algorithmic (coding, compression, random generation, drawing, etc.) ;
- enumerative combinatorics (symbolic, analytical, bijective method, etc.) ;
- algebraic combinatorics (symmetric functions, algebras and monoids, etc.) ;
- discrete geometry ;
- discrete probabilities (graphs, random maps, random trees, etc.).

- We acknowledge
*support*from the following funding projets :- RandNET ;
**ANR**: 3DMaps, CartesEtPlus, IsOMa, LambdaComb ;**GDR**: Branchement, Informatique Mathématique (GT Alea, CombAlg, GéoAlgo).