3 citations · 5 across the 4 of their papers we have counts for
4 papers
Higgs bundles and indecomposable parabolic bundles over the projective line
Emmanuel Letellier
In this paper we count the number of isomorphism classes of geometrically indecomposable quasi-parabolic structures of a given type on a given vector bundle on the projective line…
DT-invariants of quivers and the Steinberg character of GL_n
Emmanuel Letellier
In this paper we give a simple description of DT-invariants of double quivers without potential as the multiplicity of the Steinberg character in some representation associated wit…
Tensor products of unipotent characters of general linear groups over finite fields
Emmanuel Letellier
We study multiplicities of unipotent characters in tensor products of unipotent characters of GL(n,q). We prove that these multiplicities are polynomials in q with non-negative int…
Positivity of Kac polynomials and DT-invariants for quivers
Tamas Hausel, Emmanuel Letellier, Fernando Rodriguez-Villegas
We give a cohomological interpretation of both the Kac polynomial and the refined Donaldson-Thomas- invariants of quivers. This interpretation yields a proof of a conjecture of Kac…