Equivariant higher twisted K-theory

Add to your list(s) Download to your calendar using vCal

• Ulrich Pennig (Cardiff University)
• Thursday 30 March 2017, 11:30-12:30
• Seminar Room 1, Newton Institute.

If you have a question about this talk, please contact INI IT.

OASW02 - Subfactors, higher geometry, higher twists and almost Calabi-Yau algebras

Twisted K-Theory can be expressed in terms of section algebras of locally trivial bundles of compact operators. However, from the point of view of homotopy theory, this setup just captures a small portion of the possible twists. In joint work with Marius Dadarlat we generalised the classical theory to a C-algebraic model, which captures the higher twists of K-theory as well and is based on strongly self-absorbing C-algebras. In this talk I will discuss possible generalisations to the equivariant case, which is joint work with David Evans. In particular, I will first review the construction of the equivariant twist of U(n) representing the generator of its equivariant third cohomology group with respect to the conjugation action of U(n) on itself. Then I will talk about work in progress on a generalisation to (localised) higher twisted K-theory. 

• A Dixmier-Douady theory for strongly self-absorbing C-algebras arXiv:1302.4468
• Unit spectra of K-theory from strongly self-absorbing C-algebras arXiv:1306.2583

This talk is part of the Isaac Newton Institute Seminar Series series.

This talk is included in these lists:

• All CMS events
• Featured lists
• INI info aggregator
• Isaac Newton Institute Seminar Series
• School of Physical Sciences
• Seminar Room 1, Newton Institute
• bld31

Note that ex-directory lists are not shown.