Construímos a componente generica do espaço de moduli dos germes de curvas legendrianas com projec

In this talk we will discuss some aspects of Riemannian geometry where the chosen connection has a

A very long-standing problem in Algebraic Geometry is to determine the stability of exceptional bund

Unprojection theory aims to analyze (and construct) complicated commutative rings in terms of simple

A double (Lie) groupoid is a groupoid in the category of (Lie) groupoids. A standard example is the

A Calabi-Yau orbifold is locally modeled on C^n/G with G a finite subgroup of SU(n). If the singular

The birational classification of projective manifolds was developed by F. Severi, R. Hall and D. Lie

Lie groupoids are natural generalizations of Lie groups. In the world of Lie groups it is well-known

In this talk, a proof of a conjecture of B. Shoikhet is presented, which gives an alternative appro

We will introduce Abelian and non-Abelian gerbes, from the point of view of Lie groupoids, and conne