LIBROS DEL AUTOR: holger kammeyer

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  • Introduction to ℓ²-invariants
    Holger Kammeyer
    This book introduces the reader to the most important concepts and problems in the field of ℓ²-invariants. After some foundational material on group von Neumann algebras, ℓ²-Betti numbers are defined and their use is illustrated by several examples. The text continues with Atiyah’s question on possible values of ℓ²-Betti numbers and the relation to Kaplansky’s zero divisor conj...
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