2026-06-29T07:38:37Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/346312023-08-11T01:45:00Zcom_20.500.14352_14col_20.500.14352_15

Non-formal co-symplectic manifolds Bazzoni, G. Fernández, Marisa Muñoz, Vicente 514 Co-symplectic manifold Mapping torus Minimal model Formal manifold. Geometría 1204 Geometría We study the formality of the mapping torus of an orientation-preserving diffeomorphism of a manifold. In particular, we give conditions under which a mapping torus has a non-zero Massey product. As an application we prove that there are non-formal compact co-symplectic manifolds of dimension m and with first Betti number b if and only if m = 3 and b >= 2, or m >= 5 and b >= 1. Explicit examples for each one of these cases are given. MICINN (Spain) UPV/EHU Depto. de Álgebra, Geometría y Topología Fac. de Ciencias Matemáticas TRUE pub 2023-06-19T14:53:55Z 2023-06-19T14:53:55Z 2015 journal article https://hdl.handle.net/20.500.14352/34631 0002-9947 10.1090/S0002-9947-2014-06361-7 eng MTM2010-17389 MTM2011-28326-C02-02 UFI11/52 restricted access application/pdf application/pdf American Mathematical Society