左H-模代数的Hopf反射根

The Hopf Reflective Radicals of Left HModule Algebras

设A是左H模代数 ,α是环 (代数 )的根性质 ,借助于α得出了A的Hopf反射根性质αH,并证明了A的Hopf反射根αH(A) =A∩α(A #H) ;设 β为左H 模代数的根性质 ,Ω={A｜β(A) =A ,A是左H 模代数 } ,Δ={A #H｜A∈Ω} ,以Δ环类 (代数类 )作下根α,同时给出了αH=β的充分必要条件 .类似地 ,设代数根性质α ,以Ω ={A｜α(A #H) =A #H}为环类作下根 β ,给出了 β=αH 的充分必要条件 .

Assuming that A is left H-module algebra, α is a radical of rings, we define a new radical of A and we call it the Hopf reflective radical of α on A. In this paper, some properties of the Hopf reflective radical are studied.