English

The Calkin algebra has outer automorphisms

Operator Algebras 2007-05-23 v1 Functional Analysis Logic

Abstract

Assuming the continuum hypothesis, we show that the Calkin algebra has 2^{aleph_1} outer automorphisms.

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Cite

@article{arxiv.math/0606594,
  title  = {The Calkin algebra has outer automorphisms},
  author = {N. Christopher Phillips and Nik Weaver},
  journal= {arXiv preprint arXiv:math/0606594},
  year   = {2007}
}

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13 pages