Foundation item: the National Natural Science Foundation of China (No. 10571043; 10671053); the Natural Science Foundation of Hebei Province (No. 102132) and the Fundation of the Education Department of Hebei Province (No. 2004108).
This paper studies Morita duality of semigroup-graded rings, and discusses an equiva, lence between duality functors of graded module category and bigraded bimodules. An important result is obtained: A semigroup bigr...
研究了分次广义Γ-环的弱强分次B row n-M cC oy根与拟弱强分次B row n-M cC oy根,并从不同角度刻划了分次广义Γ-环的弱强分次B row n-M cC oy根.证明了任何一个分次广义Γ-环都有弱强分次B row n-M cC oy根和拟弱强分次B row n-M cC o...