2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78199Canonical framings and stable framings for the tangent bundle of a spin 3-manifold are introduced, and illustrated by a number of familiar examples. Methods for constructing canonical framings, and for comparing them with other naturally defined framings, are discussed.29 pages. To appear in Turkish J. Math, 1999, Proc. Gokova 1998Geometric Topology57M99, 57R22text