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We study the possible dimension vectors of indecomposable parabolic bundles on the projective line, and use our answer to solve the problem of characterizing those collections of conjugacy classes of n by n matrices for which one can find…

Algebraic Geometry · Mathematics 2007-05-23 William Crawley-Boevey

For any almost-simple group $G$ over an algebraically closed field $k$ of characteristic zero, we describe the automorphism group of the moduli space of semistable $G$-bundles over a connected smooth projective curve $C$ of genus at least…

Algebraic Geometry · Mathematics 2024-04-16 Roberto Fringuelli

In this paper, we show that for any reductive group $G$ the moduli space of semistable $G$-Higgs bundles on a curve in characteristic $p$ is a twisted form of the moduli space of semistable flat $G$-connections. This is the semistable…

Algebraic Geometry · Mathematics 2023-10-26 Andres Fernandez Herrero , Siqing Zhang

We describe the moduli space of logarithmic rank 2 connections on elliptic curves with 2 poles.

Classical Analysis and ODEs · Mathematics 2020-12-18 Thiago Fassarella , Frank Loray

For any smooth proper rigid space $X$ over a complete algebraically closed extension $K$ of $\mathbb Q_p$ we give a geometrisation of the $p$-adic Simpson correspondence of rank one in terms of analytic moduli spaces: The $p$-adic character…

Algebraic Geometry · Mathematics 2022-12-06 Ben Heuer

We study the asymptotic behavior of Hitchin's hyperk\"ahler metric on the moduli space of rank two irregular Higgs bundles over $\mathbb{C}P^1$. Along a generic curve, we prove that the Hitchin metric is asymptotic to the semiflat metric at…

Differential Geometry · Mathematics 2024-01-05 Gao Chen , Nianzi Li

We construct natural operators connecting the cohomology of the moduli spaces of stable Higgs bundles with different ranks and genera which, after numerical specialization, recover the topological mirror symmetry conjecture of…

Algebraic Geometry · Mathematics 2025-06-03 Davesh Maulik , Junliang Shen

The geometric Langlands correspondence for complex algebraic curves differs from the original Langlands correspondence for number fields in that it is formulated in terms of sheaves rather than functions (in the intermediate case of curves…

Representation Theory · Mathematics 2020-05-28 Edward Frenkel

We study the Picard-Lefschetz formula for the Siegel modular threefold of paramodular level and prove the weight-monodromy conjecture for its middle degree inner cohomology with arbitrary automorphic coefficients. We give some applications…

Number Theory · Mathematics 2024-12-10 Pol van Hoften

In this paper, we investigate the apparent singularities and the dual parameters of rank 2 parabolic connections on $\mathbb{P}^1$ and rank 2 (parabolic) Higgs bundle on $\mathbb{P}^1$. Then we obtain explicit descriptions of Zariski open…

Algebraic Geometry · Mathematics 2019-09-18 Arata Komyo , Masa-Hiko Saito

In this paper we investigate the moduli space of parabolic Higgs bundles over a punctured Riemann surface with varying weights at the punctures. We show that the harmonic metric depends analytically on the weights and the stable Higgs…

Differential Geometry · Mathematics 2018-03-14 Semin Kim , Graeme Wilkin

Let $G$ be a simple and simply connected complex Lie group. We discuss the moduli space of holomorphic semistable principal $G$ bundles over an elliptic curve $E$. In particular we give a new proof of a theorem of Looijenga and…

alg-geom · Mathematics 2010-04-07 Robert Friedman , John W. Morgan , Edward Witten

We show that homologically projectively dual varieties for Grassmannians Gr(2,6) and Gr(2,7) are given by certain noncommutative resolutions of singularities of the corresponding Pfaffian varieties. As an application we describe the derived…

Algebraic Geometry · Mathematics 2007-05-23 Alexander Kuznetsov

We work on the classification of isomorphism classes of finitely generated projective modules over the C*-algebras $C\left( \mathbb{P}^{n}\left( \mathcal{T}\right) \right) $ and $C\left( \mathbb{S}_{H}^{2n+1}\right) $ of the quantum complex…

Operator Algebras · Mathematics 2018-12-14 Albert Jeu-Liang Sheu

Let $\cA$ be a commutative unital Banach algebra, $\g$ be a semisimple complex Lie algebra and $G(\cA)$ be the 1-connected Banach--Lie group with Lie algebra $\g \otimes \cA$. Then there is a natural concept of a parabolic subgroup $P(\cA)$…

Representation Theory · Mathematics 2009-09-11 Karl-Hermann Neeb , Henrik Seppanen

Hecke operators on moduli of bundles over a global function field become substantially more complicated in the presence of ramification. We show that far enough in the Harder-Narasimhan cone of $\mathrm{Bun}_G$, this extra complexity has a…

Algebraic Geometry · Mathematics 2026-04-28 Rudrendra Kashyap , Vladyslav Zveryk

Let $C$ be a nonsingular complex projective curve, and $\mathcal{L}$ e a line bundle of degree 1 on $C$. Let $\mathcal{M}_{\alpha} := \mathcal{M}(r,\mathcal{L},\alpha)$ denote the moduli space of $S$-equivalence classes of Parabolic stable…

Algebraic Geometry · Mathematics 2020-04-22 Sujoy Chakraborty

Hitchin in [Duke Math. J. 54 (1), 91-114 (1987)] introduced a proper morphism from the moduli space of stable $G$-Higgs bundles ($G=\mathrm{GL}(n,\mathbb{C}),\mathrm{Sp}(2m,\mathbb{C})$ and $\mathrm{SO}(n,\mathbb{C})$) over a curve to a…

Algebraic Geometry · Mathematics 2022-12-21 Sumit Roy

We investigate the flat holomorphic vector bundles over compact complex parallelizable manifolds $G / \Gamma$, where $G$ is a complex connected Lie group and $\Gamma$ is a cocompact lattice in it. The main result proved here is a structure…

Differential Geometry · Mathematics 2018-08-30 Indranil Biswas , Sorin Dumitrescu , Manfred Lehn

We establish an isomorphism between the moduli space of homologically trivial parabolic (Higgs) bundles on $\mathbb{P}^1$ and the quiver variety associated to a star-shaped quiver. As applications, we deduce a closed formula for the…

Algebraic Geometry · Mathematics 2026-01-21 Xueqing Wen
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