Communications in Mathematical Physics

, Volume 86, Issue 4, pp 529–538 | Cite as

Measures on projections and physical states

  • Erik Christensen
Article

Abstract

It is shown that a finitely additive measure on the projections of a von Neumann algebra withoutI2 andII1 summands is the restriction of a state. A definition of a physical state is proposed, and it is shown that such a physical state on a simpleC*-algebra with unit is a state.

Keywords

Neural Network Physical State Complex System Nonlinear Dynamics Quantum Computing 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Erik Christensen
    • 1
  1. 1.Matematisk InstitutKøbenhavns UniversitetKøbenhavnDanmark

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