Exotic cyclic cohomology classes and Lipschitz algebras

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We study the noncommutative geometry of algebras of Lipschitz continuous and Hölder continuous functions, where nonclassical and novel differential geometric invariants arise. Indeed, we introduce a new class of Hochschild and cyclic cohomology classes that pair nontrivially with higher algebraic K-theory yet vanish when restricted to the algebra of smooth functions. Said cohomology classes provide additional methods to extract numerical invariants from Connes– Karoubi’s relative sequence in K-theory.

Original languageEnglish
JournalAnnals of K-Theory
Volume8
Issue number2
Pages (from-to)221-243
Number of pages23
ISSN2379-1683
DOIs
Publication statusPublished - 2023

Bibliographical note

Publisher Copyright:
© 2023 MSP (Mathematical Sciences Publishers).

    Research areas

  • algebraic K-theory, cyclic cohomology, Lipschitz algebras, singular traces

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