2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/67517Let p: M -> B be a family of compact manifolds equipped with a unitarily flat vector bundle F -> M. We generalize Igusa's higher Franz-Reidemeister torsion τ(M/B;F) to the case that the fibre-wise cohomology H^*(M/B;F) -> B carries a parallel metric. If moreover M admits a fibre-wise Morse function, we compute the difference of τ(M/B;F) and the higher analytic torsion \Cal T(M/B;F). We also generalise the examples given in math.DG/0111222 .amstex (with pstricks), 77 pages. For minor updates, see http://www.mathematik.uni-regensburg.de/Goette/preprints/Differential GeometryK-Theory and Homology58J52; 57R22, 57Q10text