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arxiv: 1501.07446 · v2 · pith:J67PK27Rnew · submitted 2015-01-29 · 🧮 math.GT

Survey on approximating L²-invariants by their classical counterparts: Betti numbers, torsion invariants and homological growth

classification 🧮 math.GT
keywords invariantsapproximatingapproximationbetticlassicalconcerningcounterpartscoverings
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In this paper we discuss open problems concerning L^2-invariants focusing on approximation by towers of finite coverings.

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