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arXiv · 2509.20930

Learners are Almost Free Compact Closed

Mitchell Riley
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Abstract

The category of learners has a pleasant symmetric formulation when the morphisms are considered up to a coarser equivalence than the one originally described in the paper "Backprop as Functor". A quotient of this modified category gives a new construction of the free compact closed category on a symmetric monoidal category.

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Mitchell Riley. 2025-09-25. Learners are Almost Free Compact Closed. https://doi.org/10.4204/eptcs.429.3

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