4 papers
Higher Kazhdan projections and delocalised -Betti numbers
Sanaz Pooya, Hang Wang
We provide an explicit description of the K-classes of higher Kazhdan projections in degrees greater than 0 for specific free product groups and Cartesian product groups. Employing…
Delocalised traces on Hecke algebras of right-angled, hyperbolic type
Piotr Nowak, Sanaz Pooya, Sven Raum +1
For every Hecke C*-algebra of right-angled, hyperbolic type, we construct a smooth subalgebra to which traces associated with arbitrary conjugacy classes in the associated Coxeter…
Euler characteristics, higher Kazhdan projections and delocalised -Betti numbers
Sanaz Pooya, Baiying Ren, Hang Wang
For non-amenable finitely generated virtually free groups, we show that the combinatorial Euler characteristic introduced by Emerson and Meyer is the preimage of the K-theory class…
Property (T) for Banach algebras
Emilie Mai Elkiær, Sanaz Pooya
We define and study the notion of property for Banach algebras, generalizing the one from -algebras. For a second countable locally compact group and a given fam…