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The theory developed by Gambino and Kock, of polynomials over a locally cartesian closed category E, is generalised for E just having pullbacks. The 2-categorical analogue of the theory of polynomials and polynomial functors is given, and its relationship with Street's theory of fibrations within 2-categories is explored. Johnstone's notion of "bagdomain data" is adapted to the present framework to make it easier to completely exhibit examples of polynomial monads.
@article{TAC_2015_30_a15, author = {Mark Weber}, title = {Polynomials in categories with pullbacks}, journal = {Theory and applications of categories}, pages = {533--598}, publisher = {mathdoc}, volume = {30}, year = {2015}, language = {en}, url = {http://geodesic.mathdoc.fr/item/TAC_2015_30_a15/} }
Mark Weber. Polynomials in categories with pullbacks. Theory and applications of categories, Tome 30 (2015), pp. 533-598. http://geodesic.mathdoc.fr/item/TAC_2015_30_a15/