2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103525The stochastic generators of Markov-regular operator cocycles on symmetric Fock space are studied in a variety of cases: positive cocycles, projection cocycles, and partially isometric cocycles. Moreover a class of transformations of positive contraction cocycles is exhibited which leads to a polar decomposition result.15 pages; accepted in special volume of Markov Processes and Related Fields for the John Lewis Memorial Conference, DIT Dublin 2005. An error rectified; illustrative examples addedMathematical PhysicsOperator Algebras81S25; 47D06text