English

Infinite Noncommutative Covering Projections

Operator Algebras 2014-10-28 v7

Abstract

Gelfand - Na\u{i}mark theorem supplies a one to one correspondence between commutative CC^*-algebras and locally compact Hausdorff spaces. So any noncommutative CC^*-algebra can be regarded as a generalization of a topological space. Generalizations of several topological invariants may be defined by algebraic methods. For example Serre Swan theorem states that complex topological KK-theory coincides with KK-theory of CC^*-algebras. This article devoted to the noncommutative generalization of infinite covering projections. Infinite covering projections of spectral triples are also discussed. It is shown that covering projection of foliation algebras can be constructed by topological coverings of foliations and isospectral deformations. Described an interrelationship between noncommutative covering projections and KK-homology. The Dixmier trace of noncommutative covering projections is discussed.

Keywords

Cite

@article{arxiv.1405.1859,
  title  = {Infinite Noncommutative Covering Projections},
  author = {Petr Ivankov},
  journal= {arXiv preprint arXiv:1405.1859},
  year   = {2014}
}

Comments

51 pages, 34 references. arXiv admin note: text overlap with arXiv:hep-th/9904001, arXiv:1107.3458, arXiv:math/0608572 by other authors. text overlap with arXiv:math/0011194, arXiv:1107.3458 by other authors

R2 v1 2026-06-22T04:08:57.191Z