Mês: agosto 2024

O Seminário de Combinatória continua as suas atividades de forma online. Agradecemos a oportunidade de receber a professora adjunta Adriana Juzga León da UERJ.

Serão emitidos certificados de participação para Atividade Complementar. Basta colocar seu nome completo, instituição de origem, e e-mail no Chat ao final do seminário.

Não é necessária inscrição prévia.

Data: 28/08/2024
Horário: 14:00h (Brasil)
Sala:  https://meet.google.com/sqs-etsv-tzi
Palestrante:   Adriana Juzga León, UERJ

Título: Graph configurations associated with Latin squares and finite groups
Abstract:  There are several graphs whose vertex set can be associated with many algebraic structures and whose edges reflect in some way the nature of the algebraic structure considered. In particular, with each finite group we can associate some graph classes. For example, the graph obtained considering the group’s Cayley table as a Latin square, the commuting graph and the power graph. We highlight that, from the detailed study of these graphs, we can investigate some relevant problems in group theory. In this talk, we present a brief description of the Latin square associated with a finite group and some properties of its graph. Finally, we present some open problems for future research.  

Nesta sexta-feira (02/08), teremos mais um encontro do Seminário de Geometria Algébrica da UFF, às 11h.

Seguem as informações abaixo:

Palestrante: Nicola Pagani (Liverpool University)

Título: Classification of compactified Jacobians over nodal curves

Resumo: If X is a smooth proper curve, then the Jacobian of X is a classical and well-studied object in algebraic geometry. When X is singular, the moduli space of degree 0 line bundles is rarely compact, and over the last century many efforts have been made to study the modular compactifications of this space, which we call “compactified Jacobians of X”. In this talk we focus on the case when X has at worst nodal singularities. Some compactified Jacobians cannot arise as limits of Jacobians of smooth curves – we regard them as exotic objects. We will see that, if one excludes these exotic cases, then one can give a simple and complete combinatorial classification of all compactified Jacobians. This is based on work of myself with Tommasi, on a paper by Viviani, and on work in progress with Fava and Viviani.

Data: 02/08

Horário: 11h

Sala: 411 – Bloco H – Gragoatá.

Esperamos vocês!

Nesta quinta (01/08) haverá mais uma edição do Seminário de Geometria Diferencial, às 14h.

O palestrante convidado é o Professor Juan Miguel Ruiz (Unam – México).

A palestra será realizada na sala 407 – 4o andar, Bloco H, Campus do Gragoatá.

Segue abaixo o cartaz.