String Diagrams for Premonoidal Categories (Román, 2023)

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Abstract. Premonoidal and Freyd categories are both generalized by non-cartesian Freyd categories: effectful categories. We construct string diagrams for effectful categories in terms of the string diagrams for a monoidal category with a freely added object.

ArXiv preprint.
This paper is an extended journal version of the first part of Promonads and String Diagrams for Effectful Categories (Roman, 2022), presented at ACT 2022.

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