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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 investigate the representation theory of the polynomial core of the quantum Teichmuller space of a punctured surface S. This is a purely algebraic object, closely related to the combinatorics of the simplicial complex of ideal cell…

Geometric Topology · Mathematics 2014-11-11 Francis Bonahon , Xiaobo Liu

In this paper we construct certain moduli spaces, which we call moduli spaces of (principal) $F$-bundles, and study their basic properties. These spaces are associated to triples consisting of a smooth projective geometrically connected…

Algebraic Geometry · Mathematics 2007-05-23 Yakov Varshavsky

We introduce a new class of $\mathfrak{sl}_2$-triples in a complex simple Lie algebra $\mathfrak{g}$, which we call magical. Such an $\mathfrak{sl}_2$-triple canonically defines a real form and various decompositions of $\mathfrak{g}$.…

Algebraic Geometry · Mathematics 2024-01-18 Steve Bradlow , Brian Collier , Oscar Garcia-Prada , Peter Gothen , André Oliveira

In this paper, we will provide a review of the geometric construction, proposed by Witten, of the SU(n) quantum representations of the mapping class groups which are part of the Reshetikhin-Turaev TQFT for the quantum group U_q(sl(n, C)).…

Differential Geometry · Mathematics 2014-08-21 Jørgen Ellegaard Andersen , Niels Leth Gammelgaard

In our previous paper with the same title, we established the complex Banach manifold structure for the Teichm\"uller space of circle diffeomorphisms whose derivatives belong to the Zygmund class. This was achieved by demonstrating that the…

Complex Variables · Mathematics 2025-02-13 Katsuhiko Matsuzaki

Let $M$ be a hyperkahler manifold, $\Gamma$ its mapping class group, and $Teich$ the Teichmuller space of complex structures of hyperkahler type. After we glue together birationally equivalent points, we obtain the so-called birational…

Algebraic Geometry · Mathematics 2017-08-22 Misha Verbitsky

In his recent investigation of a super Teichm\"uller space, Sachse (2007), based on work of Molotkov (1984), has proposed a theory of Banach supermanifolds using the `functor of points' approach of Bernstein and Schwarz. We prove that the…

Differential Geometry · Mathematics 2013-02-19 Alexander Alldridge , Martin Laubinger

We characterize which cobounded quasigeodesics in the Teichmueller space T of a closed surface are at bounded distance from a geodesic. More generally, given a cobounded lipschitz path gamma in T, we show that gamma is a quasigeodesic with…

Geometric Topology · Mathematics 2014-11-11 Lee Mosher

We define the quantum correction of the Teichm\"uller space $\mathcal{T}$ of Calabi-Yau manifolds. Under the assumption of no weak quantum correction, we prove that the Teichm\"uller space $\mathcal{T}$ is a locally symmetric space with the…

Differential Geometry · Mathematics 2014-11-04 Kefeng Liu , Changyong Yin

In this paper we complete the topological description of the space of representations of the fundamental group of a punctured surface in SL(2,R) with prescribed behavior at the punctures and nonzero Euler number, following the strategy…

Differential Geometry · Mathematics 2017-05-22 Gabriele Mondello

If $p : Y \to X$ is an unramified covering map between two compact oriented surfaces of genus at least two, then it is proved that the embedding map, corresponding to $p$, from the Teichm\"uller space ${\cal T}(X)$, for $X$, to ${\cal…

Differential Geometry · Mathematics 2011-03-24 Indranil Biswas , Mahan Mitra , Subhashis Nag

We generalize a new class of cluster type mutations for which exchange transformations are given by reciprocal polynomials. In the case of second-order polynomials of the form $x+2\cos{\pi/n_o}+x^{-1}$ these transformations are related to…

Mathematical Physics · Physics 2014-08-22 Leonid Chekhov , Michael Shapiro

In this paper, we describe a new type of surgery for non-compact Riemann surfaces that naturally appear when colliding two holes or two sides of the same hole in an orientable Riemann surface with boundary (and possibly orbifold points). As…

Mathematical Physics · Physics 2016-12-23 Leonid Chekhov , Marta Mazzocco

For $s >\frac{3}{2}$, the group of Sobolev class s diffeomorphisms of the circle is a smooth manifold modeled on the space of Sobolev class s sections of the tangent bundle of the circle. It is a topological group in the sense that…

Mathematical Physics · Physics 2023-03-28 Alice Barbara Tumpach

This is a commentary on Teichm\"ullers' paper "Ver\"anderliche Riemannsche Fl\"achen" (Variable Riemann Surfaces), published in 1944. This paper is the last one that Teichm\"uller wrote on the problem of moduli. At most places the paper…

Geometric Topology · Mathematics 2012-09-20 Annette A'Campo-Neuen , Norbert A'Campo , Lizhen Ji , Athanase Papadopoulos

We explicitly describe the Teichmuller space TH_n of hyperelliptic surfaces in terms of natural and effective coordinates as the space of certain (2n-6)-tuples of distinct points on the ideal boundary of the Poincare disc. We essentially…

Geometric Topology · Mathematics 2009-07-09 Sasha Anan'in , Eduardo C. Bento Goncalves

Wigner's unitary representation of the Lorentz group is extended to a representation of the complex orthosymplectic Lie super group OSp_C(1|2) acting on Minkowski (3,1|4)-dimensional super space essentially by Hermitean conjugation. The…

Geometric Topology · Mathematics 2023-04-18 Robert Penner

We apply the methods of simultaneous uniformization and composition operators on Besov spaces to the Teichm\"uller space $T^Z$ of circle diffeomorphisms with Zygmund continuous derivatives. As consequences, we obtain the following: (1) a…

Complex Variables · Mathematics 2025-12-11 Katsuhiko Matsuzaki

Let G be a split semisimple algebraic group with trivial center. Let S be a compact oriented surface, with or without boundary. We define {\it positive} representations of the fundamental group of S to G(R), construct explicitly all…

Algebraic Geometry · Mathematics 2007-05-23 V. V. Fock , A. B. Goncharov