Duality for convex monoids

Frank Roumen; Sutanu Roy

doi:10.1007/s11083-016-9404-1

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arXiv · 1510.05902

Duality for convex monoids

Frank Roumen·Sutanu Roy

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Abstract

Every C*-algebra gives rise to an effect module and a convex space of states, which are connected via Kadison duality. We explore this duality in several examples, where the C*-algebra is equipped with the structure of a finite-dimensional Hopf algebra. When the Hopf algebra is the function algebra or group algebra of a finite group, the resulting state spaces form convex monoids. We will prove that both these convex monoids can be obtained from the other one by taking a coproduct of density matrices on the irreducible representations. We will also show that the same holds for a tensor product of a group and a function algebra.

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BibTeX RIS

Frank Roumen, Sutanu Roy. 2015-10-20. Duality for convex monoids. https://doi.org/10.1007/s11083-016-9404-1

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