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Let $\Mg$ denote the moduli space of compact Riemann surfaces of genus $g$. Mumford had proved that, for each fixed genus $g$, there are isomorphisms asserting that certain higher $DET$ bundles over $\Mg$ are certain fixed…

alg-geom · Mathematics 2008-02-03 Indranil Biswas , Subhashis Nag , Dennis Sullivan

We describe relations between hyperbolic geometry and codimension two knots or, more exactly, between varieties of conjugacy classes of discrete faithful representations of the fundamental groups of hyperbolic n-manifolds M into…

Geometric Topology · Mathematics 2007-05-23 Boris Apanasov

The logarithmic connections studied in the paper are direct images of regular connections on line bundles over genus-2 double covers of the elliptic curve. We give an explicit parametrization of all such connections, determine their…

Algebraic Geometry · Mathematics 2008-04-24 Francois-Xavier Machu

We study resolutions of the rational map to the moduli space of stable curves that associates with a point in the Hitchin base the spectral curve. In the rank two case the answer is given in terms of the space of quadratic multi-scale…

Algebraic Geometry · Mathematics 2024-01-11 Johannes Horn , Martin Möller

We introduce a number of tools for finding and studying \emph{hierarchically hyperbolic spaces (HHS)}, a rich class of spaces including mapping class groups of surfaces, Teichm\"{u}ller space with either the Teichm\"{u}ller or…

Group Theory · Mathematics 2019-06-05 Jason Behrstock , Mark F. Hagen , Alessandro Sisto

Let $G$ be a split real form of a complex simple adjoint group whose Weyl group contains $-1$, let $\lambda$ be the Jordan projection of $G$, and let $S$ be a closed orientable surface of genus at least 2. For a $G$-Hitchin representation…

Geometric Topology · Mathematics 2025-04-02 Hongtaek Jung

We show that the higher-dimensional Heegaard Floer homology between tuples of cotangent fibers and the conormal bundle of a homotopically nontrivial simple closed curve on $T^2$ recovers the polynomial representation of double affine Hecke…

Symplectic Geometry · Mathematics 2025-11-11 Yuan Gao , Eilon Reisin-Tzur , Yin Tian , Tianyu Yuan

In \cite{kim11} we have generalized a tangency condition in the Treibich-Verdier theory \cite{trei89,tv90,trei97} about elliptic solitons to a Hitchin system. As an application of this generalization, we will define, so-called, Hitchin…

Algebraic Geometry · Mathematics 2011-10-12 Taejung Kim

We consider the moduli space of flat $SO(2n+1)$-connections (up to gauge transformations) on a Riemann surface, with fixed holonomy around a marked point. There are natural line bundles over this moduli space; we construct geometric…

Differential Geometry · Mathematics 2019-03-19 Elisheva Adina Gamse , Jonathan Weitsman

By the reduced component in a moduli space of stable quasimaps to n-dimensional projective space we mean the closure of the locus in which the domain curves are smooth. As in the moduli space of stable maps, we prove the reduced component…

Algebraic Geometry · Mathematics 2022-04-20 Sanghyeon Lee , Mu-Lin Li , Jeongseok Oh

We describe a class of spectral curves and find explicit formulas for Darboux coordinates for hyperelliptic Hitchin systems corresponding to classical simple Lie groups. We consider in detail the systems with classical rank 2 gauge groups…

Mathematical Physics · Physics 2019-12-17 P. I. Borisova , O. K. Sheinman

The general relation between Chekhov-Eynard-Orantin topological recursion and the intersection theory on the moduli space of curves, the deformation techniques in topological recursion, and the polynomiality properties with respect to…

Algebraic Geometry · Mathematics 2023-12-27 Gaëtan Borot , Maksim Karev , Danilo Lewański

A holomorphic curve in moduli spaces is the image of a non-constant holomorphic map from a hyperbolic surface $B$ of type $(g,n)$ to the moduli space $\mathcal{M}_h$ of closed Riemann surfaces of genus $h$. We show that, when all peripheral…

Geometric Topology · Mathematics 2025-09-15 Yibo Zhang

The main result of this article is that Hitchin representations over real closed field extensions $\mathbb{F}$ of $\mathbb{R}$ correspond precisely to those representations of the fundamental group of a closed surface into…

Geometric Topology · Mathematics 2025-04-01 Xenia Flamm

Representation theory of the quantum torus Hopf algebra, when the parameter $q$ is a root of unity, is studied. We investigate a decomposition map of the tensor product of two irreducibles into the direct sum of irreducibles, realized as a…

Quantum Algebra · Mathematics 2020-12-01 Hyun Kyu Kim

Let $X$ be a compact Riemann surface $X$ of genus at--least two. Fix a holomorphic line bundle $L$ over $X$. Let $\mathcal M$ be the moduli space of Hitchin pairs $(E ,\phi\in H^0(End(E)\otimes L))$ over $X$ of rank $r$ and fixed…

Algebraic Geometry · Mathematics 2012-09-11 Indranil Biswas , Peter B. Gothen , Marina Logares

Fuchsian groups with a modular embedding have the richest arithmetic properties among non-arithmetic Fuchsian groups. But they are very rare, all known examples being related either to triangle groups or to Teichmueller curves. In Part I of…

Number Theory · Mathematics 2019-02-20 Martin Moeller , Don Zagier

A basis for the space of generalized theta functions of level one for the spin groups, parameterized by the theta characteristics (the even theta characteristcs for the odd spin groups) on a curve, is shown to be projectively flat over the…

Algebraic Geometry · Mathematics 2008-08-13 Prakash Belkale

An effective family of spectral curves appearing in Hitchin fibrations is determined. Using this family the moduli spaces of stable Higgs bundles on an algebraic curve are embedded into the Sato Grassmannian. We show that the Hitchin…

Algebraic Geometry · Mathematics 2010-10-05 Andrew R. Hodge , Motohico Mulase

Let S be a K3 surface. In part I of this paper, we constructed a representation of the group Aut D(S), of auto-equivalences of the derived category of S. We interpreted this infinite dimensional representation, as the natural action of Aut…

Algebraic Geometry · Mathematics 2007-05-23 Eyal Markman