On semi-idempotents in rings (Q1087969)

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scientific article; zbMATH DE number 3989576
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On semi-idempotents in rings
scientific article; zbMATH DE number 3989576

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    On semi-idempotents in rings (English)
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    1986
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    An element \(\alpha\neq 0\) of a ring R is called semi-idempotent if \(\alpha\) is not in the proper ideal generated by \(\alpha -\alpha^ 2\). This note characterizes local rings using semi-idempotents. It is shown that R is local if and only if the only semi-idempotents of R are units and zero.
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    local rings
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    semi-idempotents
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