On the axioms for adhesive and quasiadhesive categories

Richard Garner*, Stephen Lack

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Citations (Scopus)
4 Downloads (Pure)


A category is adhesive if it has all pullbacks, all pushouts along monomorphisms, and all exactness conditions between pullbacks and pushouts along monomorphisms which hold in a topos. This condition can be modified by considering only pushouts along regular monomorphisms, or by asking only for the exactness conditions which hold in a quasitopos. We prove four characterization theorems dealing with adhesive categories and their variants.

Original languageEnglish
Pages (from-to)27-46
Number of pages20
JournalTheory and Applications of Categories
Publication statusPublished - 7 May 2012

Bibliographical note

Copyright the Author(s) 2012. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Fingerprint Dive into the research topics of 'On the axioms for adhesive and quasiadhesive categories'. Together they form a unique fingerprint.

Cite this