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Tensor products of commutative algebras do not know they are commutative rings #34453

@tscrim

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@tscrim
sage: X = algebras.Shuffle(QQ, 'ab')
sage: Y = algebras.Shuffle(QQ, 'bc')
sage: X in CommutativeRings()
True
sage: Y in CommutativeRings()
True
sage: T = tensor([X,Y])
sage: T in CommutativeRings()
False

CC: @mkoeppe @jhpalmieri @fchapoton @mantepse

Component: categories

Author: Travis Scrimshaw

Branch/Commit: 5776c61

Reviewer: Frédéric Chapoton

Issue created by migration from https://trac.sagemath.org/ticket/34453

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