On $J$-semiunitary operators in Hilbertian $J$-spaces

V. A. Khatskevich

Voronezh State University

Abstract: This paper is concerned with various properties of $J$-semiunitary operators, and with invariant dual pairs of scalar commutative semigroups of such operators.

UDC: 513.88.

Received: 16.11.1973

 English version: Mathematical Notes, 1975, 17:4, 380–384

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