New Focaccias - Turkey, ham & pepperoni focaccia with tomato, red onion & Cajun mayo. £4.90. Make it a meal deal: add a snack and a drink for £6.95.
Sweet Bites - beignets (jam-filled doughnut balls): £1 each or six for £5
Add any muffin to your hot or cold drink for only £2 after 2:00 p.m every day in April.
Buy five creams and get your sixth free.
Descriptive set theory provides a useful framework for studying the complexity of classification problems in operator algebras. In this talk I will discuss how C*-algebras can be encoded as points in a Borel space, and introduce several equivalent parametrizations, including a new one in terms of ideals of a universal C*-algebra. I will then discuss examples of natural classes of C*-algebras that form Borel sets, as well as a parametrization of *-homomorphisms and recent results on the Borelness of certain functors. Time permitting, I will introduce KK-theory and the Kasparov product, and explain a new result showing that the Kasparov product is Borel in a certain appropriate parametrized setting.