6 citations · 9 across the 3 of their papers we have counts for
3 papers
math.OA2014
Generalisations of the Haagerup approximation property to arbitrary von Neumann algebras
Martijn Caspers, Rui Okayasu, Adam Skalski +1
The notion of the Haagerup approximation property, originally introduced for von Neumann algebras equipped with a faithful normal tracial state, is generalized to arbitrary von Neu…
math.OA2014★ 6 cited
Haagerup approximation property and positive cones associated with a von Neumann algebra
Rui Okayasu, Reiji Tomatsu
We introduce the notion of the -Haagerup approximation property for using a one-parameter family of positive cones studied by Araki and show that the -Haagerup…
math.OA2012★ 3 cited
Free group -algebras associated with
Rui Okayasu
For every , we give a characterization of positive definite functions on a free group with finitely many generators, which can be extended to the positive linear functiona…