Results 101 to 110 of about 56,755 (205)

Cubic surfaces and their invariants: Some memories of Raymond Stora

open access: yesNuclear Physics B, 2016
Cubic surfaces embedded in complex projective 3-space are a classical illustration of the use of old and new methods in algebraic geometry. Recently, they made their appearance in physics, and in particular aroused the interest of Raymond Stora, to the ...
Michel Bauer
doaj   +1 more source

Ore's theorem on subfactor planar algebras

open access: yes, 2019
This article proves that an irreducible subfactor planar algebra with a distributive biprojection lattice admits a minimal 2-box projection generating the identity biprojection.
Palcoux, Sebastien
core  

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   +2 more sources

Valued Graphs and the Representation Theory of Lie Algebras

open access: yesAxioms, 2012
Quivers (directed graphs), species (a generalization of quivers) and their representations play a key role in many areas of mathematics including combinatorics, geometry, and algebra.
Joel Lemay
doaj   +1 more source

Some representations for inverse rising factorial moments

open access: yesMathematical and Computer Modelling of Dynamical Systems
Inverse rising factorial moments [Formula: see text] are fundamental quantities for positive integer-valued random variables, with broad applications in probability and combinatorics.
Xiaoxue Li   +3 more
doaj   +1 more source

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

Combinatorics of rooted trees and Hopf algebras [PDF]

open access: yesTransactions of the American Mathematical Society, 2003
We begin by considering the graded vector space with a basis consisting of rooted trees, with grading given by the count of non-root vertices. We define two linear operators on this vector space, the growth and pruning operators, which respectively raise and lower grading; their commutator is the operator that multiplies a rooted tree by its number of ...
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

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

Geometric and algebraic combinatorics

open access: yesEuropean Journal of Combinatorics, 2007
Edwin R. van Dam, Willem H. Haemers
openaire   +1 more source

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