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In this article, we derive estimates of Teichm\"uller modular forms, and associated invariants. Let $\mathcal{M}_{g}$ denote the moduli space of compact hyperbolic Riemann surfaces of genus $g\geq 2$, and let $\overline{M}_{g}$ be the…

Complex Variables · Mathematics 2024-12-19 Anilatmaja Aryasomayajula , Debasish Sadhukhan

Recall that the moduli space of smooth (that is, stable) cubic curves is isomorphic to the quotient of the upper half plane by the group of fractional linear transformations with integer coefficients. We establish a similar result for…

Algebraic Geometry · Mathematics 2007-05-23 Daniel Allcock , James A. Carlson , Domingo Toledo

We develop further basic tools in the theory of continuous bounded cohomology of locally compact groups. We apply this tools to establish a Milnor-Wood type inequality in a very general context and to prove a global rigidity result which…

Metric Geometry · Mathematics 2007-05-23 Marc Burger , Alessandra Iozzi

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

In this thesis we consider a way to construct a rich family of compact Riemann Surfaces in a combinatorial way. Given a 3-regualr graph with orientation, we construct a finite-area hyperbolic Riemann surface by gluing triangles according to…

Differential Geometry · Mathematics 2007-05-23 Dan Mangoubi

The aim of these notes is to generalize Laumon's construction [18] of automorphic sheaves corresponding to local systems on a smooth, projective curve $C$ to the case of local systems with indecomposable unipotent ramification at a finite…

Algebraic Geometry · Mathematics 2007-05-23 Jochen Heinloth

Let $S$ be a hyperbolic oriented Riemann surface of finite type. The main purpose of this paper is to show that non-trivial geometric intersection between closed curves on $S$ is detected by some symplectic submodules they naturally…

Algebraic Topology · Mathematics 2024-06-14 Marco Boggi , Pavel Zalesskii

First we survey and explain the strategy of some recent results that construct holomorphic $\text{sl}(2, \mathbb C)$-differential systems over some Riemann surfaces $\Sigma_g$ of genus $g\geq 2$, satisfying the condition that the image of…

Differential Geometry · Mathematics 2023-10-26 Indranil Biswas , Sorin Dumitrescu , Lynn Heller , Sebastian Heller , João Pedro dos Santos

The Weil-Petersson and Takhtajan-Zograf metrics on the Riemann moduli spaces of complex structures for an $n$-fold punctured oriented surface of genus $g,$ in the stable range $g+2n>2,$ are shown here to have complete asymptotic expansions…

Differential Geometry · Mathematics 2018-06-01 Richard Melrose , Xuwen Zhu

Given a smooth genus two curve $C$, the moduli space SU$_C(3)$ of rank three semi-stable vector bundles on $C$ with trivial determinant is a double cover in $\mathbb{P}^8$ branched over a sextic hypersurface, whose projective dual is the…

Algebraic Geometry · Mathematics 2023-10-11 Vladimiro Benedetti , Michele Bolognesi , Daniele Faenzi , Laurent Manivel

Let SU_C(2) be the moduli space of rank 2 semistable vector bundles with trivial de terminant on a smooth complex algebraic curve C of genus g > 1, we assume C non-hyperellptic if g > 2. In this paper we construct large families of pointed…

Algebraic Geometry · Mathematics 2013-03-25 Alberto Alzati , Michele Bolognesi

We study the compactification of the moduli space of a certain class of rank-two irregular connections on the Riemann sphere, presenting one double pole and two simple poles. To construct the compactification explicitly, we identify a class…

Algebraic Geometry · Mathematics 2026-04-23 Mattia Morbello

This thesis was motivated by a desire to understand the natural geometry of hyperbolic monopole moduli spaces. We take two approaches. Firstly we develop the twistor theory of singular hyperbolic monopoles and use it to study the geometry…

Differential Geometry · Mathematics 2007-05-23 Oliver Nash

We explicitly describe the KSBA/Hacking compactification of a moduli space of log surfaces of Picard rank 2. The space parametrizes log pairs $(S, D)$ where $S$ is a degeneration of $\mathbb{P}^1 \times \mathbb{P}^1$ and $D \subset S$ is a…

Algebraic Geometry · Mathematics 2021-10-18 Anand Deopurkar , Changho Han

We introduce a model for Hermitian holormorphic Deligne cohomology on a projective algebraic manifold which allows to incorporate singular hermitian structures along a normal crossing divisor. In the case of a projective curve, the…

Algebraic Geometry · Mathematics 2007-05-23 Ettore Aldrovandi

Differentials on Riemann surfaces correspond to translation surfaces with conical singularities, and affine transformations acting on them preserve the orders of these singularities. This viewpoint allows the moduli spaces of differentials…

Algebraic Geometry · Mathematics 2026-01-21 Dawei Chen , Fei Yu

In this paper we prove a general structure theorem for relatively hyperbolic groups (with arbitrary peripheral subgroups) acting naive convex co-compactly on properly convex domains in real projective space. We also establish a…

Geometric Topology · Mathematics 2025-12-24 Mitul Islam , Andrew Zimmer

We give a complete description of the two-dimensional moduli spaces of stable Higgs bundles of rank 2 over complex projective line with one irregular singular point, having a regular leading-order term, and endowed with a generic compatible…

Algebraic Geometry · Mathematics 2018-04-24 Péter Ivanics , András I. Stipsicz , Szilárd Szabó

In this paper, we introduce the discrete conformal structures on surfaces with boundary in an axiomatic approach, which ensures that the Poincar\'{e} dual of an ideally triangulated surface with boundary has a good geometric structure.Then…

Differential Geometry · Mathematics 2024-09-09 Xu Xu , Chao Zheng

We show that associating the Euclidean cell decomposition due to Cooper and Long to each point of the moduli space of framed strictly convex real projective structures of finite volume on the once-punctured torus gives this moduli space a…

Geometric Topology · Mathematics 2017-05-09 Robert C. Haraway , Stephan Tillmann