Results 21 to 30 of about 11,738 (234)
Book Review: Enumerative combinatorics, Volume 2 [PDF]
Bulletin of the American Mathematical Society, 2001 Ira M. Gessel
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Enumerative Combinatorics of XX0 Heisenberg Chain [PDF]
Journal of Mathematical Sciences, 2021 In the present paper, the enumeration of a certain class of directed lattice paths is based on the analysis of dynamical correlation functions of the exactly solvable XX0 model. This model is the zero anisotropy limit of one of the basic models of the theory of integrable systems, the XXZ Heisenberg magnet.
N. M. Bogoliubov
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Software for enumerative and analytic combinatorics
, 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
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THE (△,□)-EDGE GRAPH G△,□ OF A GRAPH G [PDF]
Journal 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
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Book Review: Enumerative combinatorics, vol. I [PDF]
Bulletin of the American Mathematical Society, 1987 George E. Andrews
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Enumeration of Graded (3 + 1)-Avoiding Posets [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 The notion of (3+1)-avoidance appears in many places in enumerative combinatorics, but the natural goal of enumerating all (3+1)-avoiding posets remains open. In this paper, we enumerate \emphgraded (3+1)-avoiding posets.
Joel Lewis Brewster, Yan X Zhang
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Enumerative Combinatorics of Intervals in the Dyck Pattern Poset [PDF]
Order, 2021 AbstractWe initiate the study of the enumerative combinatorics of the intervals in the Dyck pattern poset. More specifically, we find some closed formulas to express the size of some specific intervals, as well as the number of their covering relations. In most of the cases, we are also able to refine our formulas by rank.
Matteo Cervetti +4 more
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Schubert varieties, linear codes and enumerative combinatorics [PDF]
Finite Fields and Their Applications, 2005 We consider linear error correcting codes associated to higher dimensional projective varieties defined over a finite field. The problem of determining the basic parameters of such codes often leads to some interesting and difficult questions in combinatorics and algebraic geometry.
Sudhir R. Ghorpade, M. A. Tsfasman
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A challenge in enumerative combinatorics: The graph of contribution
, 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
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Tests and Proofs for Enumerative Combinatorics [PDF]
, 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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