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math.CO2019★ 13 cited
Perfect 2-colorings of Hamming graphs
Evgeny A. Bespalov, Denis S. Krotov, Aleksandr A. Matiushev +2
We consider the problem of existence of perfect -colorings (equitable -partitions) of Hamming graphs with given parameters. We start with conditions on parameters of graphs a…
math.CO2019
Regularity and counting lemmas for multidimensional matrices
Anna A. Taranenko
In the present paper we propose generalizations of the regularity and counting lemmas for multidimensional matrices under a finite alphabet. Firstly, we prove a variant of a multid…
math.CO2019
Algebraic properties of perfect structures
Anna A. Taranenko
A perfect structure is a triple of matrices and of consistent sizes such that . Perfect structures comprise similar matrices, eigenvectors, perfect co…