Перегляд за автором "Novikov, B.V."

Сортувати за: Порядок: Результатів:

  • Decomposition of directed graphs and the Turán problem 
    Novikov, B.V.; Polyakova, L.Yu.; Zholtkevich, G.N. (Український математичний журнал, 2014)
    We consider vertex decompositions of (di)graphs appearing in the automata theory and establish some properties of these decompositions. These decompositions are applied to the problem of forbidden subgraphs.
  • Gorenstein Latin squares 
    Dokuchaev, M.A.; Kirichenko, V.V.; Novikov, B.V.; Plakhotnyk, M.V. (Algebra and Discrete Mathematics, 2008)
    We introduce the notion of a Gorenstein Latin square and consider loops and quasigroups related to them. We study some properties of normalized Gorenstein Latin squares and describe all of them with order n≤8.
  • Non-commutative Grillet semigroups 
    Novikov, B.V. (Algebra and Discrete Mathematics, 2014)
    Grillet semigroups are introduced. This class of semigroups contains regular semigroups and complete commutative semigroups (by Grillet’s terminology). Some structural theorems are proved.
  • Principal quasi-ideals of cohomological dimension 1 
    Novikov, B.V. (Algebra and Discrete Mathematics, 2003)
    We prove that a principal quasi-ideal of a noncommutative free semigroup has cohomological dimension 1 if and only if it is free.
  • Subsets of defect 3 in elementary Abelian 2-groups 
    Novikov, B.V.; Polyakova, L.Yu. (Algebra and Discrete Mathematics, 2004)