2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119191We give definitions of cohomology determinants for compact, connected, orientable 3-manifolds. We also give formulae relating cohomology determinants before and after gluing a solid torus along a torus boundary component. Cohomology determinants are related to Turaev torsion, though the author hopes that they have other uses as well.22 pages, 0 figuresGeometric TopologyAlgebraic Topology57M27text