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math.GR2022
Universal co-Extensions of torsion abelian groups
Alejandro Argudín-Monroy, Carlos E. Parra
In [16], a theory of universal extensions in abelian categories is developed; in particular, the notion of Ext-universal object is presented. In the present paper, we show that an…
math.CT2022
Exactness of limits and colimits in abelian categories revisited
A. Argudín-Monroy, C. E. Parra
Let be a small category and be a -co-complete (resp. -complete) abelian category. It is a well-known fact that the category $\operatorname{Fun}(Σ,\mathcal{A…