Hyperbolic Coxeter polytopes are defined precisely by combinatorial type. Polytopes in hyperbolic n-space with n + p fac......

This is a pedagogical introduction to the theory of buildings of Jacques Tits and to some applications of this theory.Th......

In 1986, G.X. Viennot introduced the theory of heaps of pieces as a visualization of Cartier and Foata’s “partially co......