From Betti numbers to ℓ²-Betti numbers
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snapshots-2020-001.pdf (461.5Kb)Date
2020-04-15Series
Snapshots of modern mathematics from Oberwolfach;2020,01Metadata
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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.
Mathematical Subject
Geometry and TopologyCollections
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