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math.OA2012★ 14 cited
Invariants for E_0-semigroups on II_1 factors
Oliver T. Margetts, R. Srinivasan
We introduce four new cocycle conjugacy invariants for E_0-semigroups on II_1 factors: a coupling index, a dimension for the gauge group, a super product system and a C*-semiflow.…
math.OA2012★ 1 cited
Quasifree martingales
J. Martin Lindsay, Oliver T. Margetts
A noncommutative Kunita-Watanabe-type representation theorem is established for the martingales of quasifree states of CCR algebras. To this end the basic theory of quasifree stoch…