58 citations · 85 across the 17 of their papers we have counts for
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Contexts in Convex and Sequential Effect Algebras
Stan Gudder
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 elem…
Discrete Quantum Gravity and Quantum Field Theory
Stan Gudder
We introduce a discrete 4-dimensional module over the integers that appears to have maximal symmetry. By adjoining the usual Minkowski distance, we obtain a discrete 4-dimensional…
Effects as functions on projective Hilbert space
P. Busch, S. P. Gudder
The set of effect operators in a complex Hilbert space can be injectively embedded into the set of functions from the set of one-dimensional projections to the real interval [0,1].…
Discrete Quantum Processes
Stan Gudder
A discrete quantum process is defined as a sequence of local states , , satisfying certain conditions on an Hilbert space . If exists, then $…