AbstractIn view of its importance for the study of idempotents in group rings, a certain class C of groups, defined by means of a cohomological condition, was introduced by Emmanouil (Invent. Math. 132 (1998) 307–330). In the present paper, we establish the limitation of that class by constructing explicit examples of groups that do not satisfy that cohomological condition
Abstract. Conditions are given for a class 2 nilpotent group to have no central extensions of class ...
AbstractI present here a theorem asserting that a finite group has a normal p-complement provided p ...
AbstractFor any prime p and group G, denote the pro-p completion of G by Gˆp. Let C be the class of ...
AbstractIn view of its importance for the study of idempotents in group rings, a certain class C of ...
AbstractWe consider a condition on a group G, that was studied by Strebel and independently by Stroj...
Let P be an arbitrary set ofprimes. The P-nilpotent completion ofa group G is defined by the group h...
AbstractIn this paper we find upper bounds for the nilpotency degree of some ideals in the cohomolog...
Let \Gamma be a group, and let C \Gamma be the group ring of \Gamma over C . We first give a simplif...
AbstractLet R be any ring (with 1), G a torsion free group and RG the corresponding group ring. Let ...
Let 1-- • N-- • X-- • G • 1 be an extension of groups with N and G nilpotent. It is well known it is...
AbstractIn the context of finite-dimensional cocommutative Hopf algebras, we prove versions of vario...
In this paper we find upper bounds for the nilpotency degree of some ideals in the cohomology ring o...
We give an example of a compact connected Lie group of the lowest rank such that the mod 2 cohomolog...
AbstractLet N be a normal subgroup of the group G. By a result of P. Hall, G is nilpotent if N and G...
AbstractThe obstruction group SSF came up in the topological investigations of Shub and Franks. It w...
Abstract. Conditions are given for a class 2 nilpotent group to have no central extensions of class ...
AbstractI present here a theorem asserting that a finite group has a normal p-complement provided p ...
AbstractFor any prime p and group G, denote the pro-p completion of G by Gˆp. Let C be the class of ...
AbstractIn view of its importance for the study of idempotents in group rings, a certain class C of ...
AbstractWe consider a condition on a group G, that was studied by Strebel and independently by Stroj...
Let P be an arbitrary set ofprimes. The P-nilpotent completion ofa group G is defined by the group h...
AbstractIn this paper we find upper bounds for the nilpotency degree of some ideals in the cohomolog...
Let \Gamma be a group, and let C \Gamma be the group ring of \Gamma over C . We first give a simplif...
AbstractLet R be any ring (with 1), G a torsion free group and RG the corresponding group ring. Let ...
Let 1-- • N-- • X-- • G • 1 be an extension of groups with N and G nilpotent. It is well known it is...
AbstractIn the context of finite-dimensional cocommutative Hopf algebras, we prove versions of vario...
In this paper we find upper bounds for the nilpotency degree of some ideals in the cohomology ring o...
We give an example of a compact connected Lie group of the lowest rank such that the mod 2 cohomolog...
AbstractLet N be a normal subgroup of the group G. By a result of P. Hall, G is nilpotent if N and G...
AbstractThe obstruction group SSF came up in the topological investigations of Shub and Franks. It w...
Abstract. Conditions are given for a class 2 nilpotent group to have no central extensions of class ...
AbstractI present here a theorem asserting that a finite group has a normal p-complement provided p ...
AbstractFor any prime p and group G, denote the pro-p completion of G by Gˆp. Let C be the class of ...
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