Canonical Gradings of Monads

Autor: Breuvart, Flavien, McDermott, Dylan, Uustalu, Tarmo
Rok vydání: 2023
Předmět:
Zdroj: EPTCS 380, 2023, pp. 1-21
Druh dokumentu: Working Paper
DOI: 10.4204/EPTCS.380.1
Popis: We define a notion of grading of a monoid T in a monoidal category C, relative to a class of morphisms M (which provide a notion of M-subobject). We show that, under reasonable conditions (including that M forms a factorization system), there is a canonical grading of T. Our application is to graded monads and models of computational effects. We demonstrate our results by characterizing the canonical gradings of a number of monads, for which C is endofunctors with composition. We also show that we can obtain canonical grades for algebraic operations.
Comment: In Proceedings ACT 2022, arXiv:2307.15519
Databáze: arXiv