Concrete quantum logics with covering properties

  • Vladimir Müller
  • Pavel Pták
  • Josef Tkadlec


LetL be a concrete (=set-representable) quantum logic. Letn be a natural number (or, more generally, a cardinal). We say thatL admits intrinsic coverings of the ordern, and writeL∈C n , if for any pairA, B∈L we can find a collection {C i ∶ i∈I}, where cardI<n andC i ∈L for anyi∈I, such thatAB=∪ i∈l C i . Thus, in a certain sense, ifLC n , then “the rate of noncompatibility” of an arbitrary pairA,BL is less than a given numbern. In this paper we first consider general and combinatorial properties of logics ofC n and exhibit typical examples. In particular, for a givenn we construct examples ofL∈Cn+1\C n . Further, we discuss the relation of the classesC n to other classes of logics important within the quantum theories (e.g., we discover the interesting relation to the class of logics which have an abundance of Jauch-Piron states). We then consider conditions on which a class of concrete logics reduce to Boolean algebras. We conclude with some open questions.


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Copyright information

© Plenum Publishing Corporation 1992

Authors and Affiliations

  • Vladimir Müller
    • 1
  • Pavel Pták
    • 2
  • Josef Tkadlec
    • 2
  1. 1.Institute of MathematicsCzechoslovak Academy of SciencesPragueCzechoslovakia
  2. 2.Department of MathematicsTechnical University of PraguePragueCzechoslovakia

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