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The Logic of Quantum Mechanics - take II - Perimeter Institute

The Logic of Quantum Mechanics - take II - Perimeter Institute

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— commutative Frobenius algebras —<br />

A commutative monoid is a set X with a binary map<br />

µ(−, −) : X × X → X<br />

which is commutative, associative and unital i.e<br />

µ(µ(a, b), c) = µ(a, µ(b, c)) µ(a, b) = µ(b, a) µ(a, 1) = a

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