Flows associated to tangent processes on the Wiener space

We prove, under certain regularity assumptions on the coefficients, that ta ngent processes (namely semimartingales d xi(tau) = a dx(tau) + b d tau whe re a is an antisymmetric matrix) generate flows on the classical Wiener spa ce. Main applications of the result can be found in the study of the geomet ry of path spaces. (C) 1999 Academic Press.