Results 91 to 100 of about 56,755 (205)

Moduli of algebraic and tropical curves

open access: yes, 2013
This is mostly* a non-technical exposition of the joint work arXiv:1212.0373 with Caporaso and Payne. Topics include: Moduli of Riemann surfaces / algebraic curves; Deligne-Mumford compactification; Dual graphs and the combinatorics of the ...
Abramovich, Dan
core   +1 more source

Algebraic properties of word equations

open access: yes, 2014
The question about maximal size of independent system of word equations is one of the most striking problems in combinatorics on words. Recently, Aleksi Saarela has introduced a new approach to the problem that is based on linear-algebraic properties of ...
Holub, Štěpán, Žemlička, Jan
core   +1 more source

Computational complexity in algebraic combinatorics

open access: yesCurrent Developments in Mathematics
Notes associated with the Current Developments in Mathematics 2023 ...
openaire   +2 more sources

Homogeneous Algebras, Statistics and Combinatorics

open access: yesLetters in Mathematical Physics, 2002
After some generalities on homogeneous algebras, we give a formula connecting the Poincaré series of a homogeneous algebra with the homology of the corresponding Koszul complex generalizing thereby a standard result for quadratic algebras. We then investigate two particular types of cubic algebras: The first one called the parafermionic (parabosonic ...
Dubois-Violette, Michel, Popov, Todor
openaire   +3 more sources

Further results on permanents of Laplacian matrices of trees

open access: yesOpen Mathematics
The research on the permanents of graph matrices is one of the contemporary research topic in algebraic combinatorics. Brualdi and Goldwasser characterized the upper and lower bounds of permanents of Laplacian matrices of trees.
Wu Tingzeng, Dong Xiangshuai
doaj   +1 more source

Algebraic Combinatorics in Financial Data Analysis: Modeling Sovereign Credit Ratings for Greece and the Athens Stock Exchange General Index

open access: yesAppliedMath
This study investigates the relationship between sovereign credit rating transitions and domestic equity market performance, focusing on Greece from 2004 to 2024. Although credit ratings are central to sovereign risk assessment, their immediate influence
Georgios Angelidis, Vasilios Margaris
doaj   +1 more source

PENINGKATAN KOMPETENSI GURU PEMBINA OLIMPIADE MATEMATIKA SISWA SEKOLAH MENENGAH PERTAMA KABUPATEN MADIUN

open access: yesAs-Sidanah, 2019
The objective of this research is to describe the improvement of the competence of Olympic workshop participants in problem-solving of mathematics Olympiad for mathematics teachers of Junior High Schools in the Madiun Regency by using the qualitative ...
Mohammad Tohir
doaj   +1 more source

Semidefinite programming, harmonic analysis and coding theory

open access: yes, 2009
These lecture notes where presented as a course of the CIMPA summer school in Manila, July 20-30, 2009, Semidefinite programming in algebraic combinatorics.
Bachoc, Christine
core   +6 more sources

Combinatorics of free vertex algebras [PDF]

open access: yesJournal of Algebra, 2002
This paper illustrates the combinatorial approach to vertex algebra - study of vertex algebras presented by generators and relations. A necessary ingredient of this method is the notion of free vertex algebra. Borcherds \cite{bor} was the first to note that free vertex algebras do not exist in general. The reason for this is that vertex algebras do not
openaire   +3 more sources

Δ–Springer varieties and Hall–Littlewood polynomials

open access: yesForum of Mathematics, Sigma
The $\Delta $ -Springer varieties are a generalization of Springer fibers introduced by Levinson, Woo and the author that have connections to the Delta Conjecture from algebraic combinatorics.
Sean T. Griffin
doaj   +1 more source

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