Precomplete varieties of semigroups.
P-regular semigroups.
Primary factorization in semigroups
Primary ideals in semigroups.
Primary semigroups.
Prime ideals in a semigroup of measures
Primitive orthodox semigroups.
Product of idempotents in finite full transformation semigroups.
Products of four idempotents in finite full transformation semigroups.
Products of inverse semigroups.
Projectives in inverse semigroups.
Proper left type- covers.
Properties of congruences on commutative monoids.
Properties of the subsemigroups of the bicyclic monoid
In this paper we study some properties of the subsemigroups of the bicyclic monoid B, by using a recent description of its subsemigroups. We start by giving necessary and sufficient conditions for a subsemigroup to be finitely generated. Then we show that all finitely generated subsemigroups are automatic and finitely presented. Finally we prove that a subsemigroup of B is residually finite if and only if it does not contain a copy of B.
Propriétés des demi-groupes de fractions
Propriétés des demi-groupes de fractions
Prüfer and Dedekind monoids.
PRÜFER AND DEDEKIND MONOIDS II.
Prüfer -groups
Pseudosimple Commutative Semigroups.