Pairs of partially ordered groups with the same convex subgroups
Partially ordered combining structures and multiple sources of knowledge evidences in rule-based expert systems
Principal convergences on lattice ordered groups
Principal projection bands of a Riesz space
Projectability and weak homogeneity of pseudo effect algebras
In this paper we deal with a pseudo effect algebra possessing a certain interpolation property. According to a result of Dvurečenskij and Vettterlein, can be represented as an interval of a unital partially ordered group . We prove that is projectable (strongly projectable) if and only if is projectable (strongly projectable). An analogous result concerning weak homogeneity of and of is shown to be valid.
Prüfer -groups