Definition 11.2.3. Let A be a k-algebra. We say an A-module M is simple if it is nonzero and the only A-submodules are 0 and M. We say A is simple if the only two-sided ideals of A are 0 and A.
Definition 11.2.3. Let A be a k-algebra. We say an A-module M is simple if it is nonzero and the only A-submodules are 0 and M. We say A is simple if the only two-sided ideals of A are 0 and A.
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