Coherence for Skew-Monoidal Categories
@inproceedings{Uustalu2014CoherenceFS,
title={Coherence for Skew-Monoidal Categories},
author={T. Uustalu},
booktitle={MSFP},
year={2014}
}We motivate a variation (due to K. Szlachof monoidal categories called skew-monoidal cat- egories where the unital and associativity laws are not required to be isomorphisms, only natural transformations. Coherence has to be formulated differently than in the well-known monoidal case. In my (to my knowledge new) version it becomes a statement of uniqueness of normalizing rewrites. We present a proof of this coherence proof and also formalize it fully in the dependently typed pro- gramming… CONTINUE READING
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