Accessible aspects of 2-category theory

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Authors

BOURKE John Denis

Year of publication 2021
Type Article in Periodical
Magazine / Source Journal of Pure and Applied Algebra
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.1016/j.jpaa.2020.106519
Doi http://dx.doi.org/10.1016/j.jpaa.2020.106519
Keywords Accessible category; 2-category; Pseudomorphism
Description Categorical structures and their pseudomaps rarely form locally presentable 2-categories in the sense of Cat-enriched category theory. However, we show that if the categorical structure in question is sufficiently weak (such as the structure of monoidal, but not strict monoidal, categories) then the 2-category in question is accessible. Furthermore, we explore the flexible limits that such 2-categories possess and their interaction with filtered colimits.
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