Reference : Weak fiber products in bicategories of fractions
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Physical, chemical, mathematical & earth Sciences : Mathematics
Weak fiber products in bicategories of fractions
Tommasini, Matteo mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Mathematics Research Unit >]
[en] bicategories of fractions ; weak fiber products ; weak pullbacks ; stacks
[en] We fix any pair (C,W) consisting of a bicategory and a class of morphisms in it, admitting a bicalculus of fractions, i.e. a “localization” of C with respect to the class W. In the resulting bicategory of fractions, we identify necessary and sufficient conditions for the existence of weak fiber products.
Fonds National de la Recherche - FnR

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