Structure of ordered semirings.
Structure of partially ordered cyclic semigroups
This paper recalls some properties of a cyclic semigroup and examines cyclic subsemigroups in a finite ordered semigroup. We prove that a partially ordered cyclic semigroup has a spiral structure which leads to a separation of three classes of such semigroups. The cardinality of the order relation is also estimated. Some results concern semigroups with a lattice order.
Structure spaces of lattice ordered groups
Su alcuni invarianti numerici associati a sistemi di equazioni lineari in un modulo
Subadditive functions on modules and subgroups of abelian groups.
Subdirect decompositions and the radical of a generalized Boolean algebra extension of a lattice ordered group
The extension of a lattice ordered group by a generalized Boolean algebra will be denoted by . In this paper we apply subdirect decompositions of for dealing with a question proposed by Conrad and Darnel. Further, in the case when is linearly ordered we investigate (i) the completely subdirect decompositions of and those of , and (ii) the values of elements of and the radical .
Subdirect product decompositions of -algebras
Subdirect representation of tight Riesz groups by hybrid products.
Subdirectly irreducible MV-algebras
In this note we characterize the one-generated subdirectly irreducible MV-algebras and use this characterization to prove that a quasivariety of MV-algebras has the relative congruence extension property if and only if it is a variety.
Subdirectly Irreducibles in some Varieties of Algebras having the Semilattice Structure
Subfields of lattice-ordered fields that mimic maximal totally ordered subfields
Subgroups and hulls of Specker lattice-ordered groups
In this article, it will be shown that every -subgroup of a Specker -group has singular elements and that the class of -groups that are -subgroups of Specker -group form a torsion class. Methods of adjoining units and bases to Specker -groups are then studied with respect to the generalized Boolean algebra of singular elements, as is the strongly projectable hull of a Specker -group.
Submeasures and Locally Solid Topologies on Riesz Spaces.
Subtraction algebras and -algebras
In this note we show that a subtraction algebra is equivalent to an implicative -algebra, and a subtraction semigroup is a special case of a -semigroup.
Subtraction semigroups
A subtraction semigroup is a semigroup with a further operation "" added, called subtraction and satisfying certain axioms. The paper concerns a problem by B. M. Schein concerning the structure of multiplication in a subtraction semigroup.
Sui gruppi e corpi ordinati
Summen n-ter Potenzen in Körpern.
Suprema of Classes of Generalized Scrimger Varieties of Lattice Ordered Groups.
Sur les ...-bandes finies et les demigroupes totalement ordonnés ...-simples.
Sur les bandes réticulées.