相关期刊:《Applied Mathematics》《Journal of Mathematical Research with Applications》《Science China Mathematics》《Journal of Applied Mathematics and Physics》更多>>
In this article, we study generating sets of the complete semigroups of binary relations defined by X-semilattices of unions of the class Σ8(X, 5). Found uniquely irreducible generating set for the given s...
The aim is to study the set of subsets of grids of the Waterloo language from the point of view of abstract algebra and graph theory. The study was conducted using the library for working with transition graphs of non...
In this article, we study generated sets of the complete semigroups of binary relations defined by X-semilattices unions of the class Σ8 (X, n + k +1) , and find uniquely irreducible generating set for the given semi...
the Grants of Natural Scientific Foundation of China(Nos.61572013 and 61272196).
In this paper,the concepts of-condensing operator and 69-condensingoperator on a semigroup are introduced.Then we describe the-condensing operatorsand the 69-condensing operators on semilattices,join-complete lattices...
In this paper, complete semigroup binary relation is defined by semilattices of the class . We give a full description of idempotent elements of given semigroup. For the case where X is a finite set and , we derive fo...
In the paper, complete semigroup binary relation is defined by semilattices of the class . We give a full description of idempotent elements of given semigroup. For the case where X is a finite set and , we derive for...
The paper gives description of regular elements of the semigroup B X (D) which are defined by semilattices of the class Σ2 (X, 8), for which intersection the minimal elements is not empty. When X is a finite set, the...
In this paper we give a full description of idempotent elements of the semigroup BX (D), which are defined by semilattices of the class ∑1 (X, 10). For the case where X is a finite set we derive formulas by means of ...
supported by National Natural Science Foundation of China(Grant Nos.11271047 and 10971052);Natural Science Foundation of Hebei Province(Grant Nos.A2012408003 and A2012205079);the Talent Project Fund of Hebei Province(Grant No.2011-11);the Doctoral Fund from Hebei Normal University(Grant No.L2011B02);Scientific Research Fund of the Department of Education of Hebei Education Department(Grant No.ZH2012082);the Fundamental Research Funds for the Central University of China
Suda (2012) extended the ErdSs-Ko-Rado theorem to designs in strongly regularized semilattices. In this paper we generalize Suda's results in regularized semilattices and partition regularized semilattices, give ma...