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Zeitschrift für Naturforschung A

A Journal of Physical Sciences

Editor-in-Chief: Holthaus, Martin

Editorial Board: Fetecau, Corina / Kiefer, Claus

12 Issues per year


IMPACT FACTOR 2016: 1.432

CiteScore 2017: 1.30

SCImago Journal Rank (SJR) 2017: 0.403
Source Normalized Impact per Paper (SNIP) 2017: 0.632

Online
ISSN
1865-7109
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Volume 35, Issue 4

Issues

When do Projections Commute?

W. Rehder
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/zna-1980-0415

Abstract

Necessary and sufficient conditions for commutativity of two projections in Hilbert space are given through properties of so-called conditional connectives which are derived from the conditional probability operator PQP. This approach unifies most of the known proofs, provides a few new criteria, and permits certain suggestive interpretations for compound properties of quantum-mechanical systems.

About the article

Received: 1979-11-17

Published Online: 2014-06-02

Published in Print: 1980-04-01


Citation Information: Zeitschrift für Naturforschung A, Volume 35, Issue 4, Pages 437–441, ISSN (Online) 1865-7109, ISSN (Print) 0932-0784, DOI: https://doi.org/10.1515/zna-1980-0415.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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[1]
A. Böttcher and I.M. Spitkovsky
Linear Algebra and its Applications, 2010, Volume 432, Number 6, Page 1412

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