English

Approximately Multiplicative Decompositions of Nuclear Maps

Operator Algebras 2021-05-27 v1

Abstract

We expand upon work from many hands on the decomposition of nuclear maps. Such maps can be characterized by their ability to be approximately written as the composition of maps to and from matrices. Under certain conditions (such as quasidiagonality), we can find a decomposition whose maps behave nicely, by preserving multiplication up to an arbitrary degree of accuracy and being constructed from order zero maps (as in the definition of nuclear dimension). We investigate these conditions and relate them to a W*-analog.

Keywords

Cite

@article{arxiv.2105.12250,
  title  = {Approximately Multiplicative Decompositions of Nuclear Maps},
  author = {Douglas A. Wagner},
  journal= {arXiv preprint arXiv:2105.12250},
  year   = {2021}
}

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9 pages, 0 figures