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Brief communications

When a Sum of Idempotents or Projections is a Multiple of the Identity

V. I. Rabanovich, Yu. S. Samoilenko

Institute of Mathematics, Ukrainian National Academy of Sciences

UDC: 517.98

Received: 09.04.1999

DOI: 10.4213/faa333

 English version: Functional Analysis and Its Applications, 2000, 34:4, 311–313

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