14 citations · 18 across the 4 of their papers we have counts for
4 papers
Cohomology for spatial super-product systems
Oliver T. Margetts, R Srinivasan
We introduce a cohomology theory for spatial super- product systems and compute the cocycles for some basic examples called as Clifford super-product systems, thereby distingui…
Non-cocycle-conjugate -semigroups on factors
Oliver T. Margetts, R. Srinivasan
We investigate semigroups on general factors, which are not necessarily of type I, and analyse associated invariants like product systems, super product systems etc. By tenso…
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.…
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…