Exponentiability in homotopy slices of Top and pseudo-slices of Cat

Susan Niefield

We prove a general theorem relating pseudo-exponentiable objects of a bicategory K to those of the Kleisli bicategory of a pseudo-monad on K. This theorem is applied to obtain pseudo-exponentiable objects of the homotopy slices Top//B of the category of topological spaces and the pseudo-slices Cat//B of the category of small categories.

Keywords: pseudo-exponentiable, Kleisli bicategory, homotopy slice, pseudo-slice

2000 MSC: 18A40, 18C20, 18A25, 18B30, 54C35

Theory and Applications of Categories, Vol. 19, 2007, No. 1, pp 4-18.

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