On several varieties of cacti and their relations.
On simple distributively generated near-rings
On splitting of extensions of rings and topological rings.
On Splitting Rings for Azumaya Skew Group Rings
On structure space of -semigroups
In this paper we introduce the notion of the structure space of -semigroups formed by the class of uniformly strongly prime ideals. We also study separation axioms and compactness property in this structure space.
On subrings of amalgamated free products of rings
The aim of this paper is to develop the homological machinery needed to study amalgams of subrings. We follow Cohn [1] and describe an amalgam of subrings in terms of reduced iterated tensor products of the rings forming the amalgam and prove a result on embeddability of amalgamated free products. Finally we characterise the commutative perfect amalgamation bases.
On symplectic groups over polynomial rings.
On the binary system of factors of formal matrix rings
We investigate the formal matrix ring over defined by a certain system of factors. We give a method for constructing formal matrix rings from non-negative integer matrices. We also show that the principal factor matrix of a binary system of factors determine the structure of the system.
On The Brown-McCoy Radical Of Group Rings
On the Brown-McCoy radical of group rings.
On the classification of Moore algebras and their deformations.
On the closed left ideals of the group algebra
On the decomposition map of Grothendieck groups.
On the deformation theory of finite dimensional algebras.
On the deformation theory of structure constants for associative algebras.
On the derived length of units in group algebra
Let be a finite group , a field of characteristic and let be the group of units in . We show that if the derived length of does not exceed , then must be abelian.
On the endomorphism ring of a semi-injective module.
On the Goeritz Matrix of a Link.
On the Isomorphism of Group Algebras.
On the Isomorphism Problem for Integral Group-Rings of Circle-Groups.