Christopher Wulff

activity

20112025

most citedEquivariant Coarse (Co-)Homology Theories

5 citations · 13 across the 9 of their papers we have counts for

collaborators

Showing 2016Show all

2 papers · 1 filter

math.AT2016

A geometric proof of Lück's vanishing theorem for the first $L^{2}$ -Betti number of the total space of a fibration

Christopher Wulff

A significant theorem of Lück says that the first $L^{2}$ -Betti number of the total space of a fibration vanishes under some conditions on the fundamental groups. The proof is based…

math.KT2016

Coarse indices of twisted operators

Christopher Wulff

Several formulas for computing coarse indices of twisted Dirac type operators are introduced. One type of such formulas is by composition product in $E$ -theory. The other type is b…

A geometric proof of Lück's vanishing theorem for the first L2-Betti number of the total space of a fibration

Coarse indices of twisted operators

A geometric proof of Lück's vanishing theorem for the first $L^{2}$ -Betti number of the total space of a fibration