A descriptive version of Ambrose's representation theorem for flows (Q1118713)

This paper is part of the program of studying which results from ergodic theory on measure spaces can be obtained in measurable spaces without a measure. The author obtains (largely by the argument of Ambrose) a version of the Ambrose representation theorem for flows. A consequence of the theorem is that every jointly measurable flow on a standard Borel space is a flow of homeomorphisms on a complete separable metric space.