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quant-ph2006
Rings with effects
D. J. Foulis
A ring with effects (e-ring) is a generalization of the ring of bounded linear operators on a Hilbert space and the subsystem of effect operators (positive Hermitian operators domi…
quant-ph2005
Compression Bases in Unital Groups
D. J. Foulis
We study unital groups with a distinguished family of compressions called a compression base. A motivating example is the partially ordered additive group of a von Neumann algebra…