Completions, translational hulls and ideal extensions of inverse semigroups
Complexity of hypersubstitutions and lattices of varieties
Hypersubstitutions are mappings which map operation symbols to terms. The set of all hypersubstitutions of a given type forms a monoid with respect to the composition of operations. Together with a second binary operation, to be written as addition, the set of all hypersubstitutions of a given type forms a left-seminearring. Monoids and left-seminearrings of hypersubstitutions can be used to describe complete sublattices of the lattice of all varieties of algebras of a given type. The complexity...
Compression Semigroups of Open Orbits on Real Flag Manifolds.
Computers in semigroups.
Computing finite commutative semigroups.
Computing the Ideal Structure of Finite Semigroups.
Computing the integral closure of an affine semigroup.
Comultiplication on monoids.
Concerning congruence relations on commutative semigroups (Preliminary communication)
Concerning congruences on symmetric inverse semigroups
Concerning restrictions of Green's H equivalence.
Conditions for strong Morita equivalence of partially ordered semigroups
We investigate when a partially ordered semigroup (with various types of local units) is strongly Morita equivalent to a posemigroup from a given class of partially ordered semigroups. Necessary and sufficient conditions for such equivalence are obtained for a series of well-known classes of posemigroups. A number of sufficient conditions for several classes of naturally ordered posemigroups are also provided.
Conditions nécessaires et suffisantes de simplifiabilité des demi-groupes quotients d'un demi-groupe libre sur un ensemble fini par certaines congruences
Congruence lattices of Rees matrix semigroups.
Congruence monoids
Congruence relations on left canonic semigroups.
Congruence-free inverse semigroups.
Congruence-free regular semigroups with zero.
Congruence-preserving endomorphisms.
Congruences associated with inverse transversals.