In this paper,Kaplansky-type theorems are given to characterize GCD-monoids and valuation monoids.Also,(unique) r-factorable monoids are defined and it is shown
Let G be a solvable group. In this paper, we prove that the set of vertices of the p-modular character degree graph of G is contained in the set of vertices of
In this paper, we prove some basic properties of left weakly regular near-rings.We give an affirmative answer to the question whether a left weakly regular near
An Ockham algebra (L; f) is of boolean shape if its lattice reduct L is boolean and f is not the complementation. We investigate a natural construction of Ockha