FUNDAMENTALNAYA
I PRIKLADNAYA MATEMATIKA
(FUNDAMENTAL AND APPLIED MATHEMATICS)
2001, VOLUME 7, NUMBER 3, PAGES 925-930
G. G. Amosov
Abstract
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We investigate the possibility of approximation modulo $s_2$
of isometrical operators in Hilbert space. Further we give
the criterion
of innerness of quasifree automorphisms of hyperfinfite
factors $\mathcal M$
of type $\mathrm{II}_1$ and type $\mathrm{III}_{\lambda }$
generated by the representations
of the algebra of canonical anticommutation relations (CAR).
The results are used to describe cocycle conjugacy classes of
quasifree shifts on hyperfinite factors of $\mathcal M$ .
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Last modified: December 23, 2001