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This is the first one of a series of papers on association of orientations, lattice polytopes, and abelian group arrangements to graphs. The purpose is to interpret the integral and modular tension polynomials of graphs at zero and negative…

Combinatorics · Mathematics 2007-06-25 Beifang Chen

This paper deals with the location of the complex zeros of the Tutte polynomial for a class of self-dual graphs. For this class of graphs, as the form of the eigenvalues is known, the regions of the complex plane can be focused on the sets…

Combinatorics · Mathematics 2009-05-19 Jean-Michel Billiot , Franck Corset , Eric Fontenas

We extend the close interplay between continued fractions, orthogonal polynomials, and Gaussian quadrature rules to several variables in a special but natural setting which we characterize in terms of moment sequences. The crucial condition…

Classical Analysis and ODEs · Mathematics 2023-03-29 Tomas Sauer , Yuan Xu

We give a general multiplication-convolution identity for the multivariate and bivariate rank generating polynomial of a matroid. The bivariate rank generating polynomial is transformable to and from the Tutte polynomial by simple algebraic…

Combinatorics · Mathematics 2009-09-15 Joseph P. S. Kung

Unlike Whitney's definition of the corank-nullity generating function $T(G;x+1,y+1)$, Tutte's definition of his now eponymous polynomial $T(G;x,y)$ requires a total order on the edges of which the polynomial is a posteriori independent.…

Combinatorics · Mathematics 2019-06-11 Spencer Backman

The classical Tutte polynomial is a two-variate polynomial $T_G(x,y)$ associated to graphs or more generally, matroids. In this paper, we introduce a polynomial $\widetilde{T}_H(x,y)$ associated to a bipartite graph $H$ that we call the…

Combinatorics · Mathematics 2024-05-08 Csongor Beke , Gergely Kál Csáji , Péter Csikvári , Sára Pituk

In the literature can be found several descriptions of the Tutte polynomial of graphs. Tutte defined it thanks to a notion of activity based on an ordering of the edges. Thereafter, Bernardi gave a non-equivalent notion of the activity…

Combinatorics · Mathematics 2014-12-08 Julien Courtiel

Motivated by Dohmen-P\"onitz-Tittmann's bivariate chromatic polynomial $\chi_G(x,y)$, which counts all $x$-colorings of a graph $G$ such that adjacent vertices get different colors if they are $\le y$, we introduce a bivarate version of…

Combinatorics · Mathematics 2021-12-21 Matthias Beck , Maryam Farahmand , Gina Karunaratne , Sandra Zuniga Ruiz

We consider the numbers arising in the problem of normal ordering of expressions in canonical boson creation and annihilation operators. We treat a general form of a boson string which is shown to be associated with generalizations of…

Quantum Physics · Physics 2010-12-30 M A Mendez , P Blasiak , K A Penson

We discuss the Borel Tukey ordering on cardinal invariants of the continuum. We observe that this ordering makes sense for a larger class of cardinals than has previously been considered. We then provide a Borel version of a large portion…

Logic · Mathematics 2019-08-16 Samuel Coskey , Tamás Mátrai , Juris Steprāns

We introduce a new graph polynomial in two variables. This ``interlace'' polynomial can be computed in two very different ways. The first is an expansion analogous to the state space expansion of the Tutte polynomial; the significant…

Combinatorics · Mathematics 2007-05-23 Richard Arratia , Bela Bollobas , Gregory B. Sorkin

The computational complexity of time-dependent perturbation theory is well-known to be largely combinatorial whatever the chosen expansion method and family of parameters (combinatorial sequences, Goldstone and other Feynman-type…

Strongly Correlated Electrons · Physics 2010-07-26 Christian Brouder , Ângela Mestre , Frédéric Patras

It is well known that the 2-variable Tutte polynomials contain chromatic polynomial and flow polynomial of graphs, i.e. the cases of $y=0$ and $x=0$. In 2013, K\'{a}lm\'{a}n introduced the interior and exterior polynomials which generalized…

Combinatorics · Mathematics 2026-05-26 Tianlong Ma , Xiaxia Guan , Xian'an Jin

We introduce a family of block-additive automatic sequences, that are obtained by allocating a weight to each couple of digits, and defining the $n$th term of the sequence as being the total weight of the integer $n$ written in base $k$.…

Combinatorics · Mathematics 2020-06-24 Irène Marcovici , Thomas Stoll , Pierre-Adrien Tahay

This paper studies Bernoulli cell complexes from the perspective of persistent homology, Tutte polynomials, and random-cluster models. Following the previous work [9], we first show the asymptotic order of the expected lifetime sum of the…

Probability · Mathematics 2016-02-16 Yasuaki Hiraoka , Tomoyuki Shirai

Identities obtained by elementary finite Fourier analysis are used to derive a variety of evaluations of the Tutte polynomial of a graph G at certain points (a,b) where (a-1)(b-1) equals 2 or 4. These evaluations are expressed in terms of…

Combinatorics · Mathematics 2007-09-20 Andrew J. Goodall

G\"ottsche-Schroeter invariants are a genus 0 extension of Block-G\"ottsche invariants. They interpolate between Welschinger invariants involving pairs of complex conjugated points and genus 0 descendant Gromov-Witten invariants. They can…

Algebraic Geometry · Mathematics 2024-11-05 Gurvan Mével

The Tutte polynomial of a graph is a two-variable polynomial whose zeros and evaluations encode many interesting properties of the graph. In this article we investigate the zeros of the Tutte polynomials of graphs, and show that they form a…

Combinatorics · Mathematics 2016-09-01 Seongmin Ok , Thomas J. Perrett

In this work, we aim to study a strong version of Ito's lemma for convex function. By considering the corresponding sub-martingale on a Brownian motion, we gain more insights about the convex function through a probabilistic viewpoint. The…

Probability · Mathematics 2026-03-24 Minh Nguyen

We consider the Potts model in a magnetic field on an arbitrary graph $G$. Using a formula of F. Y. Wu for the partition function $Z$ of this model as a sum over spanning subgraphs of $G$, we prove some properties of $Z$ concerning…

Statistical Mechanics · Physics 2015-05-13 Shu-Chiuan Chang , Robert Shrock