Abstract
A length function on a group Γ is a function L:Γ→R + such that:
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1
L(1)=0
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2
L(γ)=L(γ-1) for all γ∈Γ
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3
L(γ1γ2)≤ L(γ1)+L(γ2) for all γ1,γ2 ∈Γ
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© 2002 Springer Basel AG
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Valette, A. (2002). A Glimpse into Non-commutative Geometry: Property (RD). In: Introduction to the Baum-Connes Conjecture. Lectures in Mathematics ETH Zürich. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8187-6_8
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DOI: https://doi.org/10.1007/978-3-0348-8187-6_8
Publisher Name: Birkhäuser, Basel
Print ISBN: 978-3-7643-6706-0
Online ISBN: 978-3-0348-8187-6
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