Results 11 to 20 of about 171,184 (277)

Refinements and Symmetries of the Morris identity for volumes of flow polytopes

open access: yesComptes Rendus. Mathématique, 2021
Flow polytopes are an important class of polytopes in combinatorics whose lattice points and volumes have interesting properties and relations. The Chan–Robbins–Yuen (CRY) polytope is a flow polytope with normalized volume equal to the product of ...
Morales, Alejandro H., Shi, William
doaj   +1 more source

The oriented swap process and last passage percolation

open access: yes, 2021
We present new probabilistic and combinatorial identities relating three random processes: the oriented swap process on $n$ particles, the corner growth process, and the last passage percolation model.
Bisi, Elia   +3 more
core   +1 more source

Half-Spin Tautological Relations and Faber's Proportionalities of Kappa Classes [PDF]

open access: yes, 2019
We employ the $1/2$-spin tautological relations to provide a particular combinatorial identity. We show that this identity is a statement equivalent to Faber's formula for proportionalities of kappa-classes on $\mathcal{M}_g$, $g\geq 2$.
Garcia-Failde, Elba   +3 more
core   +3 more sources

A new combinatorial identity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We prove a combinatorial identity which arose from considering the relation rp(x,y,z)=(x+y−z)p−(xp+yp−zp) in connection with Fermat's last theorem.
Joseph Sinyor   +2 more
doaj   +1 more source

Explicit enumeration of triangulations with multiple boundaries [PDF]

open access: yes, 2007
We enumerate rooted triangulations of a sphere with multiple holes by the total number of edges and the length of each boundary component.
Krikun, Maxim
core   +5 more sources

A new triple sum combinatorial identity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We prove a new triple sum combinatorial identity derived from rp(x,y,z)=(x+y−z)p−(xp+yp−zp), extending a previous result by Sinyor et al.
Joseph Sinyor, Akalu Tefera
doaj   +1 more source

A Nekrasov-Okounkov type formula for affine $\widetilde{C}$ [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
In 2008, Han rediscovered an expansion of powers of Dedekind $\eta$ function due to Nekrasov and Okounkov by using Macdonald's identity in type $\widetilde{A}$.
Mathias Pétréolle
doaj   +1 more source

On a Combinatorial Identity

open access: yes, 1999
Recently the second named author discovered a combinatorial identity in the context of vertex representations of quantum Kac-Moody algebras. We give a direct and elementary proof of this identity. Our method is to show a related identity of distributions.
Ding, Jintai, Jing, Naihuan
openaire   +3 more sources

A Combinatorial Proof for Cayley's Identity [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2014
In a recent paper, Caracciolo, Sokal and Sportiello presented, inter alia, an algebraic/combinatorial proof for Cayley's identity. The purpose of the present paper is to give a "purely combinatorial" proof for this identity; i.e., a proof involving only combinatorial arguments.
openaire   +4 more sources

A Combinatorial proof of a partition identity of Andrews and Stanley

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
In his paper, “On a partition function of Richard Stanley,” George Andrews proves a certain partition identity analytically and asks for a combinatorial proof.This paper provides the requested combinatorial proof.
Andrew V. Sills
doaj   +1 more source

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