Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/43878
Title: | Some Remarks on Pullbacks in Gumm Categories | Authors: | Gran, Marino Rodelo, Diana |
Issue Date: | 2014 | Publisher: | DMUC - Textos de Matemática | Project: | info:eu-repo/grantAgreement/FCT/COMPETE/132981/PT | metadata.degois.publication.title: | Categorical Methods in Algebra and Topology: Special Volume in Honour of Manuela Sobral | metadata.degois.publication.volume: | 46 | Abstract: | We extend some properties of pullbacks which are known to hold in a Mal'tsev context to the more general context of Gumm categories. The varieties of universal algebras which are Gumm categories are precisely the congruence modular ones. These properties lead to a simple alternative proof of the known property that central extensions and normal extensions coincide for any Galois structure associated with a Birkhoff subcategory of an exact Goursat category. | URI: | https://hdl.handle.net/10316/43878 | Rights: | openAccess |
Appears in Collections: | I&D CMUC - Livros e Capítulos de Livros |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Pullbacks_Gumm_Cats_Revised.pdf | 252.91 kB | Adobe PDF | View/Open |
Page view(s) 50
482
checked on Oct 29, 2024
Download(s)
169
checked on Oct 29, 2024
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.