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Keywords:
dual automorphism invariant module; supplemented module; semisimple ring; perfect ring; summand sum property
dual automorphism invariant module; supplemented module; semisimple ring; perfect ring; summand sum property
Summary:
We introduce the notion of an automorphism liftable module and give a characterization to it. We prove that category equivalence preserves automorphism liftable. Furthermore, we characterize semisimple rings, perfect rings, hereditary rings and quasi-Frobenius rings by properties of automorphism liftable modules. Also, we study automorphism liftable modules with summand sum property (SSP) and summand intersection property (SIP).
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