Kruskal’s uniqueness theorem gives a simple criterion ensuring that a 3-way tensor admits a…
Future and Ongoing Seminars
I will review some classical examples of groups whose strictly descending chains of subgroups…
Past Seminars
We explain how deformations of a parabolic bundle ξ are given by the vector…
Program:
With $G=GL(n,\mathbb{C})$, let $\mathcal{X}_{\Gamma}G$ be the $G$-character variety of a given…
Hyperpolygons spaces are a family of (finite dimensional, non-compact) hyperkähler spaces, that…
Geodesic completeness for Pseudo-Riemannian manifolds: A dynamical approach for problems in geometry
Geodesic completeness for Pseudo-Riemannian manifolds: A dynamical approach for problems in…
The idea of using geometric objects to represent subgroups of the free
group goes back to…
Mathematics was developed as a strong research instrument with fully verifiable argumentations…
In this talk I will shortly present a recent result from our team.
From Geometry to Algebra and back: geometric structures and representations of the fundamental group
A geometric structure is a local modeling of a manifold M on a specified space X with prescribed…
In Donagi-Pantev's programme to deduce geometric Langlands from its abelianised version, wobbly…
There are 3684030417 non-isomorphic semigroups of order 8 (according to entry A027851 of OEIS),…
In this talk we discuss deformations of Lie groupoids and introduce the cohomology which…
Groups of automorphisms of $d$-…
For a semisimple real Lie group $G$, parabolic $G$-Higgs bundles over a punctured Riemann…
Hitchin moduli spaces are non-compact hyperkähler manifolds parameterising solutions of gauge-…
We study a class of morphisms between two-sided restriction semigroups which we call {\it proper…
During the first half of the talk I will give a survey about the Hitchin connection on the sheaf…
There exists a unique (smooth) cubic hypersurface of dimension 7 in $\mathbb{P}^8$ which is…
A classical result due to Seidenberg states that every singular holomorphic foliation on a…
The problem of solving Fredholm integral equations of the first kind is a prototype of an ill-…
