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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 />

− • − : X × X → X<br />

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

(a • b) • c = a • (b • c) a • b = b • a a • 1 = a

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