Výsledky vyhledávání - Classificació AMS::05 Combinatorics::05A Enumerative combinatorics

Bijections for Baxter families and related objects Autor Felsner, Stefan, Fusy, Éric, Noy, Marc, Orden, David

“…The Baxter number B n can be written as B n = ∑ k = 0 n Θ k , n − k − 1 with Θ k , ℓ = 2 ( k + 1 ) 2 ( k + 2 ) ( k + ℓ k ) ( k + ℓ + 1 k ) ( k + ℓ + 2 k ) …”
Získat plný text

Root Polytopes and Growth Series of Root Lattices Autor Ardila, Federico, Beck, Matthias, Hoşten, Serkan, Pfeifle, Julian, Seashore, Kim

“…The convex hull of the roots of a classical root lattice is called a root polytope. We determine explicit unimodular triangulations of the boundaries of the…”
Získat plný text

Extreme Weights in Steinhaus Triangles Autor Brunat, Josep M., Maureso, Montserrat

“…Let {0=w0<w1<w2<…<wm} be the set of weights of binary Steinhaus triangles of size n, and let Wi be the set of sequences in F2n that generate triangles of…”
Získat plný text