Results 101 to 110 of about 56,755 (205)
Cubic surfaces and their invariants: Some memories of Raymond Stora
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
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
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
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
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]
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]
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
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
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
Edwin R. van Dam, Willem H. Haemers
openaire +1 more source

