A non-commutative Bayes' theorem
نویسندگان
چکیده
Using a diagrammatic reformulation of Bayes' theorem, we provide necessary and sufficient condition for the existence Bayesian inference in setting finite-dimensional $C^*$-algebras. In other words, prove an analogue theorem joint classical quantum context. Our is justified by recent advances categorical probability theory, which have provided abstract formulation theorem. process, further develop non-commutative almost everywhere equivalence illustrate its important role inversion. The construction such inverses, when they exist, involves solving positive semidefinite matrix completion problem Choi matrix. This gives solution to open constructing inversion completely unital maps acting on density matrices that do not full support. We how procedure works several examples relevant information theory.
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ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 2022
ISSN: ['1873-1856', '0024-3795']
DOI: https://doi.org/10.1016/j.laa.2022.02.030