On Integral Groups. I. The Reducible Case.
On Integral Groups. II. The Irreducible Case.
On Internal Formation Theory.
On intra-regular semigroups
On invariants of a set of matrices.
On invariants related to non-unique factorizations in block monoids and rings of algebraic integers
On inverse categories with split idempotents
We present some special properties of inverse categories with split idempotents. First, we examine a Clifford-Leech type theorem relative to such inverse categories. The connection with right cancellative categories with pushouts is illustrated by simple examples. Finally, some basic properties of inverse categories with split idempotents and kernels are studied in terms of split idempotents which generate (right or left) principal ideals of annihilators.
On inverse semigroups the closure of whose set of idempotents is a Clifford semigroup.
On invertor elements and finitely generated subgroups of groups acting on trees with inversions.
On Irreducibel Representations of p-soluble Groups in Characteristic p.
On irreducible, infinite, nonaffine Coxeter groups
The following results are proved: The center of any finite index subgroup of an irreducible, infinite, nonaffine Coxeter group is trivial; Any finite index subgroup of an irreducible, infinite, nonaffine Coxeter group cannot be expressed as a product of two nontrivial subgroups. These two theorems imply a unique decomposition theorem for a class of Coxeter groups. We also prove that the orbit of each element other than the identity under the conjugation action in an irreducible, infinite, nonaffine...
On irreducible matrix semigroups.
On irreducible projective representations of finite groups.
On Isoclinic Groups.
On isomorphic commutative group algebras of Abelian groups with -projective quotients.
On isomorphism of quasi-isomorphic torsion free Abelian groups
On J.H.C. Whitehead's aspherical question I.
On -ideals of semirings.
On K2 (...) and presentations of SLn (...) in the real quadratic case.
On Kim's conjecture.