Relatrice: Professoressa Anna Maria Fino, Università di TorinoQuando: Lunedì 20 Gennaio 2020, ore 16:30Luogo: Sala Riunioni, III piano, Plesso di Matematica.Titolo: Closed G_2-structuresAbstract: G_2-structures on 7-manifolds are defined by a closed positive 3-forms and constitute the starting point in various known and potential methods to obtain holonomy G_2-metrics. Although linear, the closed condition for a G_2-structure is very restrictive, and no general results on the existence of closed G_2-structures on compact 7-manifolds are known. In the seminar I will review known examples of compact 7-manifolds admitting a closed G_2-structure. Moreover, I will discuss some results on the behaviour of the Laplacian G_2-flow starting from a closed G_2-structure whose induced metric satisfies suitable extra conditions.Organizzatore: prof. Adriano Tomassini Pagina personale prof.ssa Fino PDF Locandina
