Cari colleghi, vi ricordo il seminario di oggi alle 14:30 in aula Riunioni. Trovate qui sotto titolo e abstract. Per chi fosse interessato, ci troviamo nell'atrio davanti all'aula Riunioni alle 13 per andare a pranzo con lo speaker. Saluti, Andrea _____________________________________ Titolo: Volumes of maximal representations into SO(2,3) Speaker: Timothe Lemistre (Nice) Abstract: Maximal representations of a surface group into a hermitian Lie group G form connected components of the character variety generalising the Teichmüller space. When G=SO(2,3), those representations act cocompactly on some convex domain in the pseudo-hyperbolic space (a pseudo-riemannian analogue of the hyperbolic space), and one can define a volume functional on the space of maximal representations. In this talk I will explain a surprising result concerning the boundedness of this volume functional.