In this paper we introduce some algebraic properties of subgroupoids and normal subgroupoids. we define other things, we define the normalizer of a wide subgroupoid H of a groupoid G and show that, as in the case of groups, this normalizer is the greatest wide subgroupoid of G in which H is normal. Furthermore, we provide definitions of the center Z(G) and the commutator G' of the groupoid G and prove that both of them are normal subgroupoids. We give the notions of inner and partial isomorphism of G and show that the groupoid I(G) given by the set of all the inner isomorphisms of G is a normal subgroupoid of A(G), the set of all the partial isomorphisms of G. Moreover, we prove that I(G) is isomorphic to the quotient groupoid G/Z(G), which...
AbstractWe call a Cayley digraph X = Cay(G, S) normal for G if the right regular representation R(G)...
AbstractWe first compare several algebraic notions of normality, from a categorical viewpoint. Then ...
A normal Hall subgroup $N$ of a group $G$ is a normal subgroup with its order coprime with its index...
In this paper we introduce some algebraic properties of subgroupoids and normal subgroupoids. we def...
Using an algebraic point of view we present an introduction to the groupoid theory; that is, we give...
U ovom radu definirali smo pojmove grupoida, monoida, grupe i podgrupe te naveli važne tvrdnje veza...
AbstractIt is shown that for the inclusion of factors (B⊆A):=(W∗(S,ω)⊆W∗(R,ω)) corresponding to an i...
AbstractIt is shown that for the inclusion of factors (B⊆A):=(W∗(S,ω)⊆W∗(R,ω)) corresponding to an i...
We prove that if a normal subgroup of the extended mapping class group of a closed surface has an el...
Investigation of groups satisfying certain related to arrangement of subgroups conditions allows alg...
Investigation of groups satisfying certain related to arrangement of subgroups conditions allows alg...
A groupoid is a generalisation of group in which composition is only partially defined. In first ha...
AbstractThe concept of an abnormal subgroup of a group G is, in a sense, opposite of that of a norma...
A groupoid is a small category in which all morphisms are isomorphisms. An inductive groupoid is a s...
The Ehresmann-Schein-Nambooripad theorem, which states that the category of inverse semigroups is i...
AbstractWe call a Cayley digraph X = Cay(G, S) normal for G if the right regular representation R(G)...
AbstractWe first compare several algebraic notions of normality, from a categorical viewpoint. Then ...
A normal Hall subgroup $N$ of a group $G$ is a normal subgroup with its order coprime with its index...
In this paper we introduce some algebraic properties of subgroupoids and normal subgroupoids. we def...
Using an algebraic point of view we present an introduction to the groupoid theory; that is, we give...
U ovom radu definirali smo pojmove grupoida, monoida, grupe i podgrupe te naveli važne tvrdnje veza...
AbstractIt is shown that for the inclusion of factors (B⊆A):=(W∗(S,ω)⊆W∗(R,ω)) corresponding to an i...
AbstractIt is shown that for the inclusion of factors (B⊆A):=(W∗(S,ω)⊆W∗(R,ω)) corresponding to an i...
We prove that if a normal subgroup of the extended mapping class group of a closed surface has an el...
Investigation of groups satisfying certain related to arrangement of subgroups conditions allows alg...
Investigation of groups satisfying certain related to arrangement of subgroups conditions allows alg...
A groupoid is a generalisation of group in which composition is only partially defined. In first ha...
AbstractThe concept of an abnormal subgroup of a group G is, in a sense, opposite of that of a norma...
A groupoid is a small category in which all morphisms are isomorphisms. An inductive groupoid is a s...
The Ehresmann-Schein-Nambooripad theorem, which states that the category of inverse semigroups is i...
AbstractWe call a Cayley digraph X = Cay(G, S) normal for G if the right regular representation R(G)...
AbstractWe first compare several algebraic notions of normality, from a categorical viewpoint. Then ...
A normal Hall subgroup $N$ of a group $G$ is a normal subgroup with its order coprime with its index...