Abstract
We show that the class of effective descent morphisms coincides with the class of regular epimorphisms in suitable categories of internal structures in an exact category. In particular this applies to quasivarieties of (ordinary) first-order structures closed under strong homomorphic images.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Janelidze, G. and Sobral, M.: Finite preorders and topological descent I, J. Pure Appl. Algebra 175 (2002), 187–205.
Janelidze, G. and Tholen, W.: Facets of descent I, Appl. Categ. Structures 2 (1994), 245–281.
Janelidze, G., Sobral, M. and Tholen, W.: Beyond barr exacteness: Effective descent morphisms, in: Categorical Foundations. Special Topics in Order, Topology, Algebra and Sheaf Theory, Cambridge University Press, to appear.
Mal'cev, A. I.: Algebraic Systems, Springer-Verlag, 1973.
Roque, A. H.: Ph.D. thesis, in preparation.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Roque, A.H. Effective Descent Morphisms in Some Quasivarieties of Algebraic, Relational, and More General Structures. Applied Categorical Structures 12, 513–525 (2004). https://doi.org/10.1023/B:APCS.0000049315.77402.40
Issue Date:
DOI: https://doi.org/10.1023/B:APCS.0000049315.77402.40