Answer to Question #17276 in Algebra for sanches

Question #17276
Let R be a J-semisimple domain and a be a nonzero central element of R. Show that the intersection of all maximal left ideals not containing a is zero.
Expert's answer
Let x be an element in thisintersection. We claim that ax ∈ rad R. Once we have provedthis, the hypotheses on R imply that ax = 0 and hence x =0. To prove the claim, let us show that, for any maximal left ideal m, we have ax∈ m. If a ∈ m, this is clear since a ∈ Z(R). If a is not in m, then bythe choice of x we have x ∈ m, andhence ax ∈ m.

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