Derivations, local and 2-local derivations on algebras of measurable operators

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Abstract

The present paper presents a survey of some recent results devoted to derivations, local derivations and 2-local derivations on various algebras of measurable operators affiliated with von Neumann algebras. We give a complete description of derivation on these algebras, except the case where the von Neumann algebra is of type II1. In the latter case the result is obtained under an extra condition of measure continuity of derivations. Local and 2-local derivations on the above algebras are also considered. We give sufficient conditions on a von Neumann algebra M, under which every local or 2-local derivation on the algebra of measurable operators affiliated with M is automatically becomes a derivation. We also give examples of commutative algebras of measurable operators admitting local and 2-local derivations which are not derivations.

Original languageEnglish
Title of host publicationContemporary Mathematics
PublisherAmerican Mathematical Society
Pages51-72
Number of pages22
DOIs
StatePublished - 2016
Externally publishedYes

Publication series

NameContemporary Mathematics
Volume672
ISSN (Print)0271-4132
ISSN (Electronic)1098-3627

Keywords

  • 2-local derivation
  • Central extensions of von Neumann algebras
  • Inner derivation
  • Local derivations
  • Locally measurable operator
  • Measurable operator
  • Regular algebra
  • Spatial derivation
  • von Neumann algebras

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