From Betti numbers to ℓ²-Betti numbers

Thumbnail Image
Files
2020-01.pdf(461.52 KB)
Date
2020
Authors
Volume
1/2020
Issue
Journal
Series Titel
Snapshots of Modern Mathematics from Oberwolfach
Book Title
Publisher
Oberwolfach : Mathematisches Forschungsinstitut Oberwolfach gGmbH
Link to publishers version
https://doi.org/10.14760/SNAP-2020-001-EN
Abstract

We provide a leisurely introduction to ℓ²-Betti numbers, which are topological invariants, by relating them to their much older cousins, Betti numbers. In the end we present an open research problem about ℓ²-Betti numbers.

Description
Keywords
Geometry and Topology
URI
https://oa.tib.eu/renate/handle/123456789/9925
 http://dx.doi.org/10.34657/8963
Citation
Kammeyer, H., & Sauer, R. (2020). From Betti numbers to ℓ²-Betti numbers. Oberwolfach : Mathematisches Forschungsinstitut Oberwolfach gGmbH. https://doi.org//10.14760/SNAP-2020-001-EN
Collections
Mathematik
Snapshots of Modern Mathematics from Oberwolfach
License
CC BY-SA 4.0 Unported
https://creativecommons.org/licenses/by-sa/4.0/