Let A,B,C be vertices of a triangle T= T(A,B,C) in the Euclidean plane. The inscribed circle is th

I aula: 6a feira, 22/Abril/2005, às 11h00 - sala 0.31

Let X and X' be a smooth projective curves over the complex numbers, the classical Torelli theorem

Every complex projective algebraic surface S satises the inequality $9\chi(\mathcal{O}_S) \geq c_1^2

Complex algebraic surfaces of general type with $p_g=q=1$ are still not completely understood. Until

Representations of surface groups into SL(3,C) are parameterized by conjugacy classes. When classes

e um resultado clássico que as transformações canónicas (simplecticas) preservam o volume, mas s

Um grupo de Burnside e um grupo finitamente gerado, infinito e tal que todos os elementos são de To

Given a volume form on an oriented Poisson manifold one can define the curl (or modular) vector fiel