Approximating Novikov-Shubin numbers of virtually cyclic coverings
Algebraic Topology
2017-01-27 v2 Spectral Theory
Abstract
We assign real numbers to finite sheeted coverings of compact CW complexes designed as finite counterparts to the Novikov-Shubin numbers. We prove an approximation theorem in the case of virtually cyclic fundamental groups employing methods from Diophantine approximation.
Keywords
Cite
@article{arxiv.1509.01142,
title = {Approximating Novikov-Shubin numbers of virtually cyclic coverings},
author = {Holger Kammeyer},
journal= {arXiv preprint arXiv:1509.01142},
year = {2017}
}
Comments
Final version to appear in Groups Geom. Dyn., 17 pages