Let (A,m) be a commutative quasi-local ring with non-zero identity and M be an Artinian A-module with dimM =d.If I is an ideal of A with e(0:M I) < o∞,then we s
The main purpose of this paper is to study generalized derivations in rings with involution which behave like strong commutativity preserving mappings.In fact,w
舞台表演呈现在人们的面前是具有美感的,演员表演的恰到好处,使得观众得到精神上的放松,欣赏到了具有艺术美感的作品。当然这样的艺术作品,除了演员的演出之外,更重要的当然
In this paper we determine all tetravalent Cayley graphs of a non-abelian group of order 3p2,where p is a prime number greater than 3,and with a cyclic Sylow p-
We give a lower bound of the Loewy length of the projective cover of the trivial module for the group algebra kG of a finite group G of Lie type defined over a