Chinese Quarterly Journal of Mathematics ›› 1988, Vol. 3 ›› Issue (4): 31-36.
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Abstract: H.K.Farahat raised the problem that when is the equality JR(G) =(JR)(G)valid,where J denotes Jacobson radical.In this paper,we ha- ve solved that Farahat equality is true for Bear radical,Livitzki radi- cal,Kothe radical,if R is Commutative ring with 1,G is any group.That is R(G)=(R)(G),PR(G)=(PR)(G),XR(G)=(KR)(G),respectively. Let G be group such that JF(G)=0,if Ch.F ∈o(G),where F is a Field.We obtained that JR(G)=(JR)(G),if R is an Artinian ring with 1,or R is an associative ring with 1,G is any group.
朱元森. 群环根的H.K.Farahat问题[J]. Chinese Quarterly Journal of Mathematics, 1988, 3(4): 31-36.
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