Homotopy theory of Moore ows (II)

Abstract

This paper proves that the q-model structures of Moore flows and of multipointed d-spaces are Quillen equivalent. The main step is the proof that the counit and unit maps of the Quillen adjunction are isomorphisms on he q-cobrant objects (all objects are q-brant). As an application, we provide a new proof of the fact that the categorization functor from multipointed d-spaces to ows has a total left derived functor which induces a category equivalence between the homotopy categories. The new proof sheds light on the internal structure of the categorization functor which is neither a left adjoint nor a right adjoint. It is even possible to write an inverse up to homotopy of this functor using Moore flows.