Results 1 to 10 of about 105 (102)

Fractional dynamic system simulating the growth of microbe [PDF]

open access: yesAdvances in Difference Equations, 2021
There are different approaches that indicate the dynamic of the growth of microbe. In this research, we simulate the growth by utilizing the concept of fractional calculus.
Samir B. Hadid, Rabha W. Ibrahim
doaj   +2 more sources

Modifications of Tutte–Grothendieck invariants and Tutte polynomials [PDF]

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Generalized Tutte–Grothendieck invariants are mappings from the class of matroids to a commutative ring that are characterized recursively by contraction–deletion rules. Well known examples are Tutte, chromatic, tension and flow polynomials.
Martin Kochol
doaj   +3 more sources

Chain polynomials and Tutte polynomials

open access: yesDiscrete Mathematics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lorenzo Traldi
exaly   +2 more sources

Graph polynomials associated with Dyson-Schwinger equations [PDF]

open access: yesMathematica Moravica, 2023
Quantum motions are encoded by a particular family of recursive Hochschild equations in the renormalization Hopf algebra which represent Dyson-Schwinger equations, combinatorially.
Shojaei-Fard Ali
doaj   +1 more source

Computing Tutte Polynomials [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
We present a new edge selection heuristic and vertex ordering heuristic that together enable one to compute the Tutte polynomial of much larger sparse graphs than was previously doable.
Michael Monagan
doaj   +1 more source

Relaxations of the matroid axioms I: Independence, Exchange and Circuits [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
Motivated by a question of Duval and Reiner about higher Laplacians of simplicial complexes, we describe various relaxations of the defining axioms of matroid theory to obtain larger classes of simplicial complexes that contain pure shifted simplicial ...
Jose ́ Alejandro Samper
doaj   +1 more source

The arithmetic Tutte polynomials of the classical root systems [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
Many combinatorial and topological invariants of a hyperplane arrangement can be computed in terms of its Tutte polynomial. Similarly, many invariants of a hypertoric arrangement can be computed in terms of its arithmetic Tutte polynomial. We compute the
Federico Ardila   +2 more
doaj   +1 more source

Arithmetic matroids and Tutte polynomials [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
We introduce the notion of arithmetic matroid, whose main example is provided by a list of elements in a finitely generated abelian group. We study the representability of its dual, and, guided by the geometry of toric arrangements, we give a ...
Michele D'Adderio, Luca Moci
doaj   +1 more source

Colored Tutte polynomials and composite knots [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2009
Surveying the results of three recent papers and some currently ongoing research, we show how a generalization of Brylawski's tensor product formula to colored graphs may be used to compute the Jones polynomial of some fairly complicated knots and, in ...
Gábor Hetyei   +2 more
doaj   +1 more source

Inapproximability of the Tutte polynomial [PDF]

open access: yesInformation and Computation, 2007
Minor changes to correct typos and provide clarification.
Leslie Ann Goldberg, Mark Jerrum
openaire   +3 more sources

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