Por Ugo Bruzzo (SISSA & Universidade Federal da Paraíba).

Por Joana Nunes da Costa (Universidade de Coimbra).

Abstract: We investigate Nijenhuis deformations of Lie-infinity algebras, a notion that unifies several Nijenhuis deformations, namely those of Lie algebras, Lie algebroids, Poisson structures and Courant structures.

Por B. Shapiro (Stockholm University).

Por Jaime Silva (CMUP - Centro de Matemática da Universidade do Porto).

Por Sergey V. Smirnov (Moscow State University).

Por Fabio Deelan Cunden (University College Dublin).

Abstract: The study of ‘moments’ of random matrices (expectations of traces of powers of the matrix) is a rich and interesting subject, mainly due to its connections to enumerative geometry. I will give some background on this and then describe some recent work which offers some new perspectives (and new results).

This talk is based on joint works with Antoine Dahlqvist, Francesco Mezzadri, Neil O’Connell and Nick Simm.

Por Rosa Sena-Dias (IST).

Por Carlos Florentino (DM, Faculdade de Ciências da ULisboa).

Abstract: Given a finitely generated group F and a complex reductive Lie group G, the G-character variety of F, denoted $X_F G=Hom(F,G)//G$, is typically a singular algebraic variety with interesting geometric and topological properties and appears in many contexts within Mathematical-Physics.

Por Maria Elisa Fernandes (Universidade de Aveiro).

Por Rui Albuquerque (Universidade de Évora / Centro de Investigação em Matemática e Aplicações).