AbstractLet e be an idempotent of the complex group ring. We study self-adjoint idempotents of C[G] by finding necessary and sufficient conditions for the right ideal eC[G] to have an element closest to 1 in the L2-norm
AbstractWe show that any complex square matrix T is a sum of finitely many idempotent matrices if an...
AbstractThe main result of this paper is a theorem which allows one to determine when a finitely gen...
Generalizing earlier results about the set of idempotents in a Banach algebra, or of self-adjoint id...
AbstractThis paper characterizes products of idempotents in (von Neumann) regular rings which are un...
AbstractThe simplest statement of the main results are these: Let π be a free group on 2 generators....
AbstractWe consider a condition on a group G, that was studied by Strebel and independently by Stroj...
AbstractLet G be a locally compact group, and let R(G) denote the ring of subsets of G generated by ...
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 a K-algebra acting densely on VD, where K is a commutative ring with unity and V is...
AbstractLet Lk denote the set of those n × n matrices expressible as a sum of k idempotent matrices....
AbstractWe say that a ring R has the idempotent matrices property if every square singular matrix ov...
AbstractLet a complex p x n matrix A be partitioned as A′=(A′1,A′2,…,A′k). Denote by ϱ(A), A′, and A...
We show that an idempotent lies in the center if it commutes with the other idempotents in the ring....
AbstractLet G be a locally compact group, and let R(G) denote the ring of subsets of G generated by ...
Let $G$ be a group and $X(G)$ its Sidki Double. The idempotent conjecture says that there should be ...
AbstractWe show that any complex square matrix T is a sum of finitely many idempotent matrices if an...
AbstractThe main result of this paper is a theorem which allows one to determine when a finitely gen...
Generalizing earlier results about the set of idempotents in a Banach algebra, or of self-adjoint id...
AbstractThis paper characterizes products of idempotents in (von Neumann) regular rings which are un...
AbstractThe simplest statement of the main results are these: Let π be a free group on 2 generators....
AbstractWe consider a condition on a group G, that was studied by Strebel and independently by Stroj...
AbstractLet G be a locally compact group, and let R(G) denote the ring of subsets of G generated by ...
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 a K-algebra acting densely on VD, where K is a commutative ring with unity and V is...
AbstractLet Lk denote the set of those n × n matrices expressible as a sum of k idempotent matrices....
AbstractWe say that a ring R has the idempotent matrices property if every square singular matrix ov...
AbstractLet a complex p x n matrix A be partitioned as A′=(A′1,A′2,…,A′k). Denote by ϱ(A), A′, and A...
We show that an idempotent lies in the center if it commutes with the other idempotents in the ring....
AbstractLet G be a locally compact group, and let R(G) denote the ring of subsets of G generated by ...
Let $G$ be a group and $X(G)$ its Sidki Double. The idempotent conjecture says that there should be ...
AbstractWe show that any complex square matrix T is a sum of finitely many idempotent matrices if an...
AbstractThe main result of this paper is a theorem which allows one to determine when a finitely gen...
Generalizing earlier results about the set of idempotents in a Banach algebra, or of self-adjoint id...
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