EuDML | Browse

Items

All a b c d e f g h i j k l m n o p q r s t u v w x y z Other

Displaying 281 – 300 of 1461

On congruence permutable $G$ -sets

Attila Nagy (2020)

Commentationes Mathematicae Universitatis Carolinae

An algebraic structure is said to be congruence permutable if its arbitrary congruences $α$ and $β$ satisfy the equation $α \circ β = β \circ α$ , where $\circ$ denotes the usual composition of binary relations. To an arbitrary $G$ -set $X$ satisfying $G \cap X = \emptyset$ , we assign a semigroup $(G, X, 0)$ on the base set $G \cup X \cup {0}$ containing a zero element $0 \notin G \cup X$ , and examine the connection between the congruence permutability of the $G$ -set $X$ and the semigroup $(G, X, 0)$ .

On congruences and ideals of partially ordered quasigroups

Milan Demko (2008)

Czechoslovak Mathematical Journal

Some results concerning congruence relations on partially ordered quasigroups (especially, Riesz quasigroups) and ideals of partially ordered loops are presented. These results generalize the assertions which were proved by Fuchs in [5] for partially ordered groups and Riesz groups.

On congruences of ...x-normal semigroups.

I. Levi, S. Seif (1991)

Semigroup forum

On congruences on finite semigroups.

T.E. Hall (1974)

Semigroup forum

On conjugating representations and adjoint representations of semisimple groups.

S. Donkin (1988)

Inventiones mathematicae

On Connected Transversals in Finite Groups.

G. Rosenberger, M. Niemenmaa (1992)

Mathematica Scandinavica

On connectedness of graphs on direct product of Weyl groups

Samy A. Youssef, S. G. Hulsurkar (1995)

Archivum Mathematicum

In this paper, we have studied the connectedness of the graphs on the direct product of the Weyl groups. We have shown that the number of the connected components of the graph on the direct product of the Weyl groups is equal to the product of the numbers of the connected components of the graphs on the factors of the direct product. In particular, we show that the graph on the direct product of the Weyl groups is connected iff the graph on each factor of the direct product is connected.

On connectedness of graphs on Weyl groups of type $A_{n}$ ( $n \geq 4$ )

Samy A. Youssef, S. G. Hulsurkar (1995)

Archivum Mathematicum

On connection between the structure of a finite group and the properties of its prime graph.

Vasil'ev, A.V. (2005)

Sibirskij Matematicheskij Zhurnal

On constructive nilpotent groups.

Khisamiev, N.G. (2007)

Sibirskij Matematicheskij Zhurnal

On convergence groupoids

Ján Šipoš (1980)

Mathematica Slovaca

On convergence groups with dense coarse subgroups

Dikran N. Dikranjan, Roman Frič, Fabio Zanolin (1987)

Czechoslovak Mathematical Journal

On convexities of $d$ -groups

Ján Jakubík (1994)

Czechoslovak Mathematical Journal

On countable extensions of primary abelian groups

Peter Vassilev Danchev (2007)

Archivum Mathematicum

It is proved that if $A$ is an abelian $p$ -group with a pure subgroup $G$ so that $A / G$ is at most countable and $G$ is either $p^{ω + n}$ -totally projective or $p^{ω + n}$ -summable, then $A$ is either $p^{ω + n}$ -totally projective or $p^{ω + n}$ -summable as well. Moreover, if in addition $G$ is nice in $A$ , then $G$ being either strongly $p^{ω + n}$ -totally projective or strongly $p^{ω + n}$ -summable implies that so is $A$ . This generalizes a classical result of Wallace (J. Algebra, 1971) for totally projective $p$ -groups as well as continues our recent investigations in (Arch....

Currently displaying 281 – 300 of 1461

Previous Page 15 Next

Displaying 281 – 300 of 1461

On congruence permutable $G$ -sets

On congruences and ideals of partially ordered quasigroups

On congruences of ...x-normal semigroups.

On congruences on finite semigroups.

On conjugating representations and adjoint representations of semisimple groups.

On Connected Transversals in Finite Groups.

On connectedness of graphs on direct product of Weyl groups

On connectedness of graphs on Weyl groups of type $A_{n}$ ( $n \geq 4$ )

On connection between the structure of a finite group and the properties of its prime graph.

On constructive nilpotent groups.

On convergence groupoids

On convergence groups with dense coarse subgroups

On convexities of $d$ -groups

On countable extensions of primary abelian groups

On cover-avoiding subgroups of Sylow subgroups of finite groups

On covers of abelian groups by cosets

On cross semigroup varieties and related questions.

On c-semigroups

On Cycles in Flag Manifolds.

On cyclic commutator subgroups.

Currently displaying 281 – 300 of 1461