From Betti numbers to ℓ²-Betti numbers
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Date
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
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
License
CC BY-SA 4.0 Unported