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Displaying 101 – 120 of 182

On regular semigroups and their multiplication.

Pierre Antoine Grillet (1974)

Semigroup forum

On representation of commutative semigroups.

V. Trnkova (1975)

Semigroup forum

On right congruences of semigroups.

R.H. Oehmke (1978)

Semigroup forum

On right normal right inverse semigroups.

S. Madhaven (1976)

Semigroup forum

On right self-injective regular semigroups.

K. Shoji (1982)

Semigroup forum

On sandwich sets and congruences on regular semigroups

Mario Petrich (2006)

Czechoslovak Mathematical Journal

Let $S$ be a regular semigroup and $E (S)$ be the set of its idempotents. We call the sets $S (e, f) f$ and $e S (e, f)$ one-sided sandwich sets and characterize them abstractly where $e, f \in E (S)$ . For $a, a^{'} \in S$ such that $a = a a^{'} a$ , $a^{'} = a^{'} a a^{'}$ , we call $S (a) = S (a^{'} a, a a^{'})$ the sandwich set of $a$ . We characterize regular semigroups $S$ in which all $S (e, f)$ (or all $S (a))$ are right zero semigroups (respectively are trivial) in several ways including weak versions of compatibility of the natural order. For every $a \in S$ , we also define $E (a)$ as the set of all idempotets $e$ such that, for any congruence $ρ$ on...

On self-injective semigroups satisfying the minimal conditions.

K. Shoji (1984)

Semigroup forum

On semidirect products of two finite semilattices.

J.E. Pin (1984)

Semigroup forum

On semigroup graded PI-algebras.

A.V. Kelarev (1993)

Semigroup forum

On semigroups admitting ring structure II.

M. Satyanarayana (1974)

Semigroup forum

On semigroups and uniform partial bands.

G.R. Baird (1972)

Semigroup forum

On semigroups having a kernel

Štefan Schwarz (1951)

Czechoslovak Mathematical Journal

On semigroups of left inner type.

H. J. Weinert (1976/1977)

Semigroup forum

On semigroups that are semilattices of left groups

S. Lajos (1974)

Matematički Vesnik

On semigroups which are not divided by any non-trivial semigroup with an identity.

A. Nagy (1984)

Semigroup forum

On semigroups with minimal or maximal condition on left congruences.

I.E. Kozhukhov (1980)

Semigroup forum

On semigroups with the idealizer condition.

I.L. Hmelnitsky (1985)

Semigroup forum

On semigroups with T-ideals

G. Szasz (1974)

Matematički Vesnik

On semilattices of groups whose arrows are epimorphisms.

Abdallah, M.El-Ghali M., Gab-Alla, L.N., Elagan, Sayed K.M. (2006)

International Journal of Mathematics and Mathematical Sciences

On semisimple bands.

B.M. Schein (1978)

Semigroup forum

Currently displaying 101 – 120 of 182

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