Download Operator Algebras and Applications: The Abel Symposium 2015 by Toke M. Carlsen, Nadia S. Larsen, Sergey Neshveyev, PDF

By Toke M. Carlsen, Nadia S. Larsen, Sergey Neshveyev, Christian Skau

Like the 1st Abel Symposium, held in 2004, the Abel Symposium 2015 keen on operator algebras. it's attention-grabbing to determine the impressive advances which have been made in operator algebras over those years, which strikingly illustrate the power of the sphere. a complete of 26 talks got on the symposium on various topics, all highlighting the richness of the subject.

The box of operator algebras used to be created within the Thirties and was once prompted through difficulties of quantum mechanics. It has for this reason built well past its preliminary meant realm of functions and improved into such different components of arithmetic as illustration concept, dynamical structures, differential geometry, quantity concept and quantum algebra. One department, referred to as “noncommutative geometry”, has turn into a robust device for learning phenomena which are past the succeed in of classical analysis.

This quantity contains examine papers that current new effects, surveys that debate the advance of a selected line of study, and articles that provide a mixture of survey and learn. those contributions supply a multifaceted portrait of gorgeous arithmetic that either newbies to the sector of operator algebras and professional researchers alike will appreciate.

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B/k ! 0 for every a; b 2 A. Proof Recall that M has a separating family of normal tracial states. 4, on any bounded subset of M the strong topology agrees with the topology generated by the family of seminorms fk k2; g (where runs through all normal tracial states of M).

1 Let G be a totally disconnected group and K < G a compact open subgroup. G=K/-modules. n ! n k ! 0 uniformly on compact sets of x 2 G. G/. G/ ÌrAd G. G/ the -algebra of locally constant, compactly supported functions on G. G/ is the linear span of the functions of the form 1Ly where y 2 G and L < G is a compact open subgroup. K0 / coincides with the -algebra of coefficients of finite dimensional unitary representations of K0 . G/ to C. G/ of compact open subsets of G. When K0 < G is a compact open subgroup, we say that a map W G !

N k ! 0. 28 Y. Arano and S. Vaes 4. G// such that n ! ıe weakly and such that k n ı Ad x n k ! 0 uniformly on compact sets of x 2 G. We must prove that k n ıe k ! 0. n ! G/ D n for all n. n a sequence of cp-multipliers 'n on C converging to 1 pointwise. Since Rep K C has the relative property (T), we conclude that 'n . ; e/ ! K/. G/ ıe k ! 0. So, k n ıe k ! 0. C / ! C be a sequence of cp-multipliers on C f converging to 1 pointwise. 4. n ! G/ is a sequence of probability measures on G such that n !

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