An invariant for pairs of almost commuting unbounded operators
funct-an
2008-02-03 v1 Functional Analysis
Abstract
For a wide class of pairs of unbounded selfadjoint operators with bounded commutator we construct a K-theoretical integer invariant which is continuous, is equal to zero for commuting operators and is equal to one for the pair (x, i d/dx).
Keywords
Cite
@article{arxiv.funct-an/9702013,
title = {An invariant for pairs of almost commuting unbounded operators},
author = {V. M. Manuilov},
journal= {arXiv preprint arXiv:funct-an/9702013},
year = {2008}
}
Comments
9 pages, LaTeX, version 2.09, no figures