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Related papers: Parametrizing Hitchin components

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Goldman parametrizes the $\mathrm{PSL}_3(\mathbb{R})$-Hitchin component of a closed oriented hyperbolic surface of genus $g$ by $16g-16$ parameters. Among them, $10g-10$ coordinates are canonical. We prove that the…

Geometric Topology · Mathematics 2019-04-18 Suhyoung Choi , Hongtaek Jung , Hong Chan Kim

In this article we define new flows on the Hitchin components for PGL(V). Special examples of these flows are associated to simple closed curves on the surface and give generalized twist flows. Other examples, so called eruption flows, are…

Differential Geometry · Mathematics 2019-10-03 Zhe Sun , Anna Wienhard , Tengren Zhang

Building on Simpson's original definition over the complex numbers, we introduce the notion of restricted sheaf $\Lambda$ of rings of differential operators on a variety defined over a field of positive characteristic. We define the notion…

Algebraic Geometry · Mathematics 2024-04-05 David Alfaya , Christian Pauly

Inspired by Le Calvez' theory of transverse foliations for dynamical systems of surfaces, we introduce a dynamical invariant, denoted by N, for Hamiltonians of any surface other than the sphere. When the surface is the plane or is closed…

Symplectic Geometry · Mathematics 2016-09-21 Vincent Humilière , Frédéric Le Roux , Sobhan Seyfaddini

A linear differential operator $T=Q(z)\frac{d}{dz}+P(z)$ with polynomial coefficients defines a continuous family of Hutchinson operators when acting on the space of positive powers of linear forms. In this context, $T$ has a unique minimal…

Dynamical Systems · Mathematics 2026-05-28 Per Alexandersson , Nils Hemmingsson , Dmitry Novikov , Boris Shapiro , Guillaume Tahar

We define a sequence of invariants $\mathcal{Z}_{N}^{\psi}$ of tangles with flat $\mathfrak{sl}_{2}$ connections (i.e. hyperbolic structures) on their complements. These can be interpreted as a geometric twist of the Kashaev invariant or as…

Quantum Algebra · Mathematics 2026-05-18 Calvin McPhail-Snyder

We extend the notion of Hitchin component from surface groups to orbifold groups and prove that this gives new examples of higher Teichm\"{u}ller spaces. We show that the Hitchin component of an orbifold group is homeomorphic to an open…

Geometric Topology · Mathematics 2020-10-28 Daniele Alessandrini , Gye-Seon Lee , Florent Schaffhauser

We give a direct interpretation of Neumann's combinatorial formula for the Chern-Simons invariant of a 3-manifold with a representation in PSL(2,C) whose restriction to the boundary takes values in upper triangular matrices. Our…

Geometric Topology · Mathematics 2014-10-01 Julien Marche

We will study the Hitchin's hamiltonian system for a modular stack of principal SL_2(C) bundle on a smooth projective curve which has a parabolic reduction at certain points. As an application we will obtain a generalization of the…

Algebraic Geometry · Mathematics 2007-08-23 Ken-ichi Sugiyama

We introduce para-complex and pseudo-Riemannian geometric methods for the study of representations of surface groups in $\mathrm{SL}(2m+1,\mathbb{R})$. For $m=1$ our techniques allow to recover several known results for Hitchin…

Differential Geometry · Mathematics 2025-03-04 Nicholas Rungi , Andrea Tamburelli

For $S$ a closed surface of genus $g\geq2$, we construct a canonical diffeomorphism from the degree $3$ Fock-Thomas space $\mathcal{T}^3(S)$ of higher complex structures to the $\text{SL}(3,\mathbb{R})$ Hitchin component. Our construction…

Geometric Topology · Mathematics 2022-04-12 Alexander Nolte

In 1992, Hitchin used his theory of Higgs bundles to construct an important family of representations of the fundamental group of a closed, oriented surface of genus at least two into the split real form of a complex adjoint simple Lie…

Differential Geometry · Mathematics 2014-07-18 Andrew Sanders

The aim of this paper is to show the existence and give an explicit description of a pseudo-Riemannian metric and a symplectic form on the $\mathrm{S}\mathrm{L}(3,\mathbb{R})$-Hitchin component, both compatible with Labourie and Loftin's…

Differential Geometry · Mathematics 2025-05-07 Nicholas Rungi , Andrea Tamburelli

We study the asymptotic geometry of a family of conformally planar minimal surfaces with polynomial growth in the $\mathrm{Sp}(4,\mathbb{R})$-symmetric space. We describe a homeomomorphism between the "Hitchin component" of wild…

Differential Geometry · Mathematics 2025-04-24 Andrea Tamburelli , Michael Wolf

We investigate the special K\"ahler geometry of the base of the Hitchin integrable system in terms of spectral curves and topological recursion. The Taylor expansion of the special K\"ahler metric about any point in the base may be computed…

Differential Geometry · Mathematics 2020-06-15 David Baraglia , Zhenxi Huang

We study the holomorphic sections of the Deligne-Hitchin moduli space of a compact Riemann surface that are invariant under the natural anti-holomorphic involutions of the moduli space. Their relationships with the harmonic maps are…

Differential Geometry · Mathematics 2020-03-17 Indranil Biswas , Sebastian Heller , Markus Roeser

The Grassmannian model represents harmonic maps from Riemann surfaces by families of shift-invariant subspaces of a Hilbert space. We impose a natural symmetry condition on the shift-invariant subspaces that corresponds to considering an…

Functional Analysis · Mathematics 2019-12-06 Alexandru Aleman , Rui Pacheco , John C. Wood

We complete the characterization of the connected components of the space of type-preserving representations of a punctured surface group into $\mathrm{PSL}(2,\mathbb{R})$. We show that the connected components are indexed by the relative…

Geometric Topology · Mathematics 2025-07-15 Inyoung Ryu , Tian Yang

Stiffener layout optimization of complex surfaces is fulfilled within the framework of topology optimization. A combined parameterization method is developed in two aspects. One is to parameterize the material distribution of the stiffener…

Computational Engineering, Finance, and Science · Computer Science 2022-01-26 Weihong Zhang , Shengqi Feng

We show that a Hitchin representation is determined by the spectral radii of the images of simple, non-separating closed curves. As a consequence, we classify isometries of the intersection function on Hitchin components of dimension 3 and…

Geometric Topology · Mathematics 2018-05-22 Martin Bridgeman , Richard Canary , François Labourie