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On bounded and unbounded idempotents whose sum is a multiple of the identity

Yurii Samoilenko, Lyudmila Turowska

math.OAarXiv:math/0109006

Abstract

We study bounded and unbounded representations of the *-algebra Qn,λ(*) generated by n idempotents whose sum equals λe (λ∈ C, e is the identity).

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