activity
19972023
most citedApproximating L2-invariants, and the Atiyah conjecture

116 citations · 1.7k across the 92 of their papers we have counts for

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Showing 2004Show all

6 papers · 1 filter

math.KT2004★ 37 cited

Bordism, rho-invariants and the Baum-Connes conjecture

Paolo Piazza, Thomas Schick

Let G be a finitely generated discrete group. In this paper we establish vanishing results for rho-invariants associated to (i) the spin-Dirac operator of a spin manifold with posi…

math.GT2004★ 38 cited

On the topology of T-duality

Ulrich Bunke, Thomas Schick

In string theory, the concept of T-duality between two principal U(1)-bundles E_1 and E_2 over the same base space B, together with cohomology classes and $h_2\in…

math.GT2004★ 63 cited

A counterexample to the (unstable) Gromov-Lawson-Rosenberg conjecture

Thomas Schick

Doing surgery on the 5-torus, we construct a 5-dimensional closed spin-manifold M with , so that the index invariant in the KO-theory of the reduced -al…

math.GT2004★ 52 cited

Enlargeability and index theory

Bernhard Hanke, Thomas Schick

Let M be a closed enlargeable spin manifold. We show non-triviality of the universal index obstruction in the K-theory of the maximal -algebra of the fundamental group of M. O…

math.GR2004★ 23 cited

Finite group extensions and the Atiyah conjecture

Peter Linnell, Thomas Schick

The Atiyah conjecture for a discrete group G states that the -Betti numbers of a finite CW-complex with fundamental group G are integers if G is torsion-free and are rational…

math.KT2004★ 11 cited

A K-Theoretic Proof of Boutet de Monvel's Index Theorem for Boundary Value Problems

Severino T. Melo, Thomas Schick, Elmar Schrohe

We study the C*-closure A of the algebra of all operators of order and class zero in Boutet de Monvel's calculus on a compact connected manifold X with non-empty boundary. We find…