Contexts in Convex and Sequential Effect Algebras

  title={Contexts in Convex and Sequential Effect Algebras},
  author={Stanley P. Gudder},
  journal={Electronic Proceedings in Theoretical Computer Science},
  • S. Gudder
  • Published 30 January 2019
  • Mathematics
  • Electronic Proceedings in Theoretical Computer Science
A convex sequential effect algebra (COSEA) is an algebraic system with three physically motivated operations, an orthogonal sum, a scalar product and a sequential product. The elements of a COSEA correspond to yes-no measurements and are called effects. In this work we stress the importance of contexts in a COSEA. A context is a finest sharp measurement and an effect will act differently according to the underlying context with which it is measured. Under a change of context, the possible… 
3 Citations

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Contexts in Quantum Measurement Theory

  • S. Gudder
  • Computer Science
    Foundations of Physics
  • 2019
This work considers properties of channels and contexts, and shows that the set of sharp channels can be given a natural partial order in which contexts are the smallest elements.



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