We establish conditions giving the existence of bipullbacks in bicategories of fractions. We apply our results to construct a - exact sequence associated with a fractor between groupoids internal to a pointed exact category.
Bipullbacks of fractions and the snail lemma / P. Jacqmin, S. Mantovani, G. Metere, E.M. Vitale. - In: JOURNAL OF PURE AND APPLIED ALGEBRA. - ISSN 0022-4049. - 223:12(2019 Dec), pp. 5147-5162. [10.1016/j.jpaa.2019.03.014]
Bipullbacks of fractions and the snail lemma
Mantovani, Sandra;
2019-12
Abstract
We establish conditions giving the existence of bipullbacks in bicategories of fractions. We apply our results to construct a - exact sequence associated with a fractor between groupoids internal to a pointed exact category.
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