Caros colegas,
Seguem abaixo as informações dos nossos próximos dois Seminários de Geometria Algébrica e Geometria Complexa da UFF.
Para consultar os próximos seminários e o histórico, basta consultar o site do Grupo de Geometria Algébrica e Complexa da UFF:
Palestrante: Yerika Marín
Título: Generalized quasi-dihedral group acting on pseudo-real Riemann surfaces
Resumo: A closed Riemann surface of genus 
is called pseudo-real if it has anticonformal automorphisms but no anticonformal involutions. These Riemann surfaces, together with real Riemann surfaces, form the real locus of the moduli space 
of closed Riemann surfaces of genus . On the other hand, pseudo-real Riemann surfaces are examples of Riemann surfaces which cannot be defined over their field of moduli [1]. In general, a finite group might not be realized as the group of conformal/anticonformal automorphisms, admitting anticonformal ones, of a pseudo-real Riemann surface, for instance, in [2], it was observed that a necessary condition for that to happen is for the group to have order a multiple of 4 . In this talk, we consider conformal/anticonformal actions of the generalized quasi-dihedral group of order 
,)
on pseudo-real Riemann surfaces. We consider two cases either 
has anticonformal elements or only contains conformal elements [3].
This is part of my Ph.D. Thesis, under the advisers Saúl Quispe and Rubén A. Hidalgo.
References
[1] M. Artebani, S. Quispe and C. Reyes. Automorphism groups of pseudoreal Riemann surfaces Journal of Pure and Applied Algebra 221 (2017), 2383-2407.
[2] E. Bujalance, M. D. E. Conder and A. F. Costa. Pseudo-real Riemann surfaces and chira regular maps, Trans. Am. Math. Soc. 362 (7) (2010), 3365-3376.
[3] R. A. Hidalgo, Y. Marín Montilla and S. Quispe. Generalized quasi-dihedral group as automorphism group of Riemann surfaces, Preprint 2022.
Data: 06/10/2023 (Sexta-feira)
Horário: 15h
Link: https://meet.google.com/mnw-coar-fji
Palestrante: Pablo Quezada Mora
Título: IHS Manifolds of K3^[2]-type with an action of Z_3^4 : A_6
Resumo: In this talk we will study IHS manifolds of K3^[2]-type with a symplectic action of Z_3^4 : A_6, the symplectic group with the biggest order, and such that they also admit a non-symplectic automorphism. We will characterize the IHS manifolds that satisfies this, and particularly we will characterize the IHS manifold of K3^[2]-type with finite automorphism group of order 174960, the biggest possible order for the finite automorphism group of a IHS manifold of K3^[2]-type, and we will give an example of it. This is a joint work with Paola Comparin and Romain Demelle.
Data: 06/10/2023 (Sexta-feira)
Horário: 16h