We introduce the concept of a nonassociative (i.e. not necessarily associative) inverse…
Future and Ongoing Seminars
I will present recent joint work with Jérémy Toulisse and Richard Wentworth on a differential…
In the 1950’s Davenport, Mirsky, Newman and Rado proved that if the integers are partitioned by…
The Gruenberg-Kegel graph of a group is defined as the graph whose vertices are the primes that…
This has been an open question for more than 70 years. I'll review what is known, including some…
Past Seminars
In this talk, we will explore some of the possible connections between (abstract) simplicial…
Let $X$ be a smooth complex projective curve and let $x\in X$ be a point. We compute the…
While it is well known that the moduli space of $G$-bundles over a smooth projective curve is…
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…
