Results 121 to 130 of about 654,082 (251)

Loops, matchings and alternating-sign matrices [PDF]

, 2003
The appearance of numbers enumerating alternating sign matrices in stationary states of certain stochastic processes is reviewed. New conjectures concerning nest distribution functions are presented as well as a bijection between certain classes of ...
de Gier, Jan
core  

Lattice points of flow polytopes related to caracol graphs

Electronic Research Archive
Flow polytopes are fundamental objects in algebraic combinatorics. In this paper, we study the enumeration of lattice points in flow polytopes associated with $ (a_1, a_2) $-caracol graphs on $ n + 2 $ vertices.
Hua Xin
doaj   +1 more source

Splines on Cayley graphs of the symmetric group

Forum 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

Discrete 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

Ain 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, Muhammad Kamran, Muflih Alhazmi, Mashaer Alsaeedi, Shreefa O. Hilali   +4 more
doaj   +1 more source

Computer Algebra in the Service of Enumerative Combinatorics

, 2021
Alin Bostan
openalex   +2 more sources

Relative rank and regularization

Forum of Mathematics, Sigma
We introduce a new concept of rank – relative rank associated to a filtered collection of polynomials. When the filtration is trivial, our relative rank coincides with Schmidt rank (also called strength).
Amichai Lampert, Tamar Ziegler
doaj   +1 more source

Algebras, Graphs and Ordered Sets - ALGOS 2020 & the Mathematical Contributions of Maurice Pouzet. [PDF]

Order (Dordr), 2023
Couceiro M, Duffus D.
europepmc   +1 more source

On the combinatorics of crystal structures. II. Number of Wyckoff sequences of a given subdivision complexity. [PDF]

Acta Crystallogr A Found Adv, 2023
Hornfeck W, Červený K.
europepmc   +1 more source

Quasi-isomorphisms of cluster algebras and the combinatorics of webs (extended abstract) [PDF]

, 2020
Chris Fraser
openalex   +1 more source