Results 11 to 20 of about 518 (190)

An Extension of the Exponential Formula in Enumerative Combinatorics [PDF]

open access: bronzeThe Electronic Journal of Combinatorics, 1995
Let $\alpha$ be a formal variable and $F_w$ be a weighted species of structures (class of structures closed under weight-preserving isomorphisms) of the form ${F}_{w} = E({F}_{w}^{c})$, where $E$ and $F_w^c$ respectively denote the species of sets and of connected $F_w$-structures.
Gilbert Labelle, Pierre Leroux
openalex   +3 more sources

Software for enumerative and analytic combinatorics

open access: green, 2016
We survey some general-purpose symbolic software packages that implement algorithms from enumerative and analytic combinatorics. Software for the following areas is covered: basic combinatorial objects, symbolic combinatorics, P lya theory, combinatorial species, and asymptotics.
Andrew MacFie
openalex   +4 more sources

Tests and Proofs for Enumerative Combinatorics [PDF]

open access: green, 2016
In this paper we show how the research domain of enumerative combinatorics can benefit from testing and formal verification. We formalize in Coq the combinatorial structures of permutations and maps, and a couple of related operations. Before formally proving soundness theorems about these operations, we first validate them, by using logic programming (
Catherine Dubois   +2 more
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Algebraic and geometric methods in enumerative combinatorics [PDF]

open access: green, 2014
A survey written for the upcoming "Handbook of Enumerative Combinatorics".
Federico Ardila
openalex   +3 more sources

Enumerative geometry meets statistics, combinatorics and topology

open access: greenNotices of the American Mathematical Society, 2022
We explain connections among several, a priori unrelated, areas of mathematics: combinatorics, algebraic statistics, topology and enumerative algebraic geometry. Our focus is on discrete invariants, strongly related to the theory of Lorentzian polynomials. The main concept joining the mentioned fields is a linear space of matrices.
Mateusz Michałek
openalex   +4 more sources

A challenge in enumerative combinatorics: The graph of contribution

open access: green, 2002
One LaTex file, 63 pages In honor of F.Y. Wu on the occasion of his 70th birthday. Statphys-Taiwan 2002. The second APCTP and sixth Taiwan International Symposium on Statistical Physics.
J-M Maillard
openalex   +4 more sources

Enumerative combinatorics on determinants and signed bigrassmannian polynomials

open access: green, 2019
As an application of linear algebra for enumerative combinatorics, we introduce two new ideas, signed bigrassmannian polynomials and bigrassmannian determinant. First, a signed bigrassmannian polynomial is a variant of the statistic given by the number of bigrassmannian permutations below a permutation in Bruhat order as Reading suggested (2002) and ...
Masato Kobayashi
openalex   +5 more sources

Book Review: Enumerative combinatorics, Volume 2 [PDF]

open access: goldBulletin of the American Mathematical Society, 2001
Ira M. Gessel
openalex   +3 more sources

Book Review: Enumerative combinatorics, vol. I [PDF]

open access: goldBulletin of the American Mathematical Society, 1987
George E. Andrews
openalex   +4 more sources

THE (△,□)-EDGE GRAPH G△,□ OF A GRAPH G [PDF]

open access: yesJournal of Algebraic Systems, 2020
To a simple graph $G=(V,E)$, we correspond a simple graph $G_{\triangle,\square}$ whose vertex set is $\{\{x,y\}: x,y\in V\}$ and two vertices $\{x,y\},\{z,w\}\in G_{\triangle,\square}$ are adjacent if and only if $\{x,z\},\{x,w\},\{y,z\},\{y,w\}\in V ...
Gh. A. Nasiriboroujeni   +2 more
doaj   +1 more source

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