【摘 要】
:
<正> For an integer n≥2,we say that an operator A is an n-idempotent ifA~n=A;A is a generalized n-idempotent if A~n=A~*;A is a hyper-generalized n-iclempotent
【机 构】
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CollegeofMathematicsandInformationScience,SchoolofMathematicsScience
【基金项目】
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Foundation item: The NNSF (10571113) of Shaanxi Province, China.