Results 111 to 120 of about 56,264 (249)

Topology of matching complexes of complete graphs via discrete Morse theory [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
Bouc (1992) first studied the topological properties of $M_n$, the matching complex of the complete graph of order $n$, in connection with Brown complexes and Quillen complexes. Bj\"{o}rner et al. (1994) showed that $M_n$ is homotopically $(\nu_n-1)$
Anupam Mondal   +2 more
doaj   +1 more source

HIGHER ALGEBRA IN COMBINATORICS

open access: yes, 2023
This article has easy and a very nice application on how to solve elementary combinatorics problems using linear ...
openaire   +1 more source

Operads in algebraic combinatorics

open access: yes, 2017
The main ideas developed in this habilitation thesis consist in endowing combinatorial objects (words, permutations, trees, Young tableaux, etc.) with operations in order to construct algebraic structures. This process allows, by studying algebraically the structures thus obtained (changes of bases, generating sets, presentations, morphisms ...
openaire   +2 more sources

Splines on Cayley graphs of the symmetric group

open access: yesForum of Mathematics, Sigma
A spline is an assignment of polynomials to the vertices of a graph whose edges are labeled by ideals, where the difference of two polynomials labeling adjacent vertices must belong to the corresponding ideal. The set of splines forms a ring. We consider
Nathan R. T. Lesnevich
doaj   +1 more source

On the Lehmer conjecture and counting in finite fields

open access: yesDiscrete Analysis, 2019
On the Lehmer conjecture and counting in finite fields, Discrete Analysis 2019:5, 8pp. Let $\alpha$ be an algebraic number and let $a_0\prod_{i=1}^k(x-\alpha_i)$ be its minimal polynomial. The _Mahler measure_ of $\alpha$ is defined to be the quantity $|
Emmanuel Breuillard, Peter Pal Varju
doaj   +1 more source

Topology of quasi divisor graphs associated with non-associative algebra

open access: yesAin Shams Engineering Journal
The visualization of graphs representing algebraic structures has increasingly gained traction in chemical engineering research, emerging as a significant scientific challenge in contemporary studies.
Muhammad Nadeem   +4 more
doaj   +1 more source

Some applications of algebra to combinatorics

open access: yesDiscrete Applied Mathematics, 1991
The author gives a very interesting survey of the application of algebraic methods in combinatorics, in the setting of (graded) partially ordered sets and lattices. Major themes are provided by the Sperner property, rank symmetry and rank unimodality. The algebraic methods employed range from linear algebra via group actions to Lie algebras.
openaire   +3 more sources

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