Homological link invariants
In this talk, I will present the theory of homological link
invariants, together with some recent de
Geometry and Topology
Jordan's theorem for the diffeomorphism group of some manifolds
We will prove that if M is an n-dimensional smooth compact
connected manifold, of cup length n, then
On the topology of polygons and hyperpolygons spaces.
Moduli spaces of polygons have been, since the ’90s, a widely studied example of K¨ahler reductio
Cohomología contínua de folheações
Trata-se de apresentar uma cohomologia associada a folheações sem nenhuma estrutura diferenciable,
Geometry of noncommutative $k$-algebras
It has been several attempts to generalize the ordinary commutative algebraic geometry to the noncom
Homotopy 2-types of complements of knotted surfaces in $S4$
Abstract- We describe an algorithm to determine the fundamental crossed module of a handle decomposi
On the rational homotopy type of homotopy boundaries
A homotopy boundary of a finite CW-complex X is the boundary of a
thickening of X, that is of a comp
Coupled equations for Kahler metrics and Yang-Mills connections
I will study natural equations coupling Kahler metrics on a complex manifold and connections on a ve
Geodesics on 2-dimensional surface with Pseudo-Riemann metric: signature changing
Consider a smooth 2-dimensional surface $S$ with coordinates $(t,x)$ and pseudo-Riemann metric, i.e.