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Lattice structure of Grassmann-Tamari orders [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
The Tamari order is a central object in algebraic combinatorics and many other areas. Defined as the transitive closure of an associativity law, the Tamari order possesses a surprisingly rich structure: it is a congruence-uniform lattice.
Thomas McConville
doaj   +1 more source

Enumeration of three term arithmetic progressions in fixed density sets [PDF]

open access: yes, 2014
Additive combinatorics is built around the famous theorem by Szemer\'edi which asserts existence of arithmetic progressions of any length among the integers. There exist several different proofs of the theorem based on very different techniques.
Sjöland, Erik
core  

Some remarks on multiplicity codes

open access: yes, 2014
Multiplicity codes are algebraic error-correcting codes generalizing classical polynomial evaluation codes, and are based on evaluating polynomials and their derivatives.
Kopparty, Swastik
core   +1 more source

Attractiveness of the Haar measure for linear cellular automata on Markov subgroups [PDF]

open access: yes, 2006
For the action of an algebraic cellular automaton on a Markov subgroup, we show that the Ces\`{a}ro mean of the iterates of a Markov measure converges to the Haar measure.
Maass, Alejandro   +3 more
core   +4 more sources

Triangular arrangements on the projective plane [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2023
In this work we study line arrangements consisting in lines passing through three non-aligned points. We call them triangular arrangements. We prove that any combinatorics of a triangular arrangement is always realized by a Roots-of-Unity-Arrangement ...
Simone Marchesi, Jean Vallès
doaj  

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

Structure and Combinatorics on Right Groups

open access: yesMathematics
Right groups form an important bridge between group theory and semigroup theory, combining the algebraic symmetry of groups with the one-sided structure of right zero semigroups.
Aftab Hussain Shah   +2 more
doaj   +1 more source

Some extensions of Alon's Nullstellensatz [PDF]

open access: yes, 2011
Alon's combinatorial Nullstellensatz, and in particular the resulting nonvanishing criterion is one of the most powerful algebraic tools in combinatorics, with many important applications.
Kós, Géza   +2 more
core   +1 more source

A Formal Account of Structuring Motor Actions With Sensory Prediction for a Naive Agent

open access: yesFrontiers in Robotics and AI, 2020
For naive robots to become truly autonomous, they need a means of developing their perceptive capabilities instead of relying on hand crafted models.
Jean-Merwan Godon   +2 more
doaj   +1 more source

Problems in Algebraic Combinatorics

open access: yesThe Electronic Journal of Combinatorics, 1995
This is a list of open problems, mainly in graph theory and all with an algebraic flavour. Except for 6.1, 7.1 and 12.2 they are either folklore, or are stolen from other people.
openaire   +3 more sources

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