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We establish the geometric Shafarevich boundedness conjecture for the moduli stack of stable minimal models, including in particular the moduli stack of KSB pairs.

Algebraic Geometry · Mathematics 2026-05-12 Junchao Shentu

Motivated by Maulik-Okounkov stable maps associated to quiver varieties, we define and construct algebraic stable maps on tensor products of representations in the category O of the Borel subalgebra of an arbitrary untwisted quantum affine…

Representation Theory · Mathematics 2024-10-30 David Hernandez

In this note we give a definition of stable maps into the classifying stack $\BGL_r$ of the general linear group. To support our belief that the definition is the correct one, we show that there are natural boundary morphisms between the…

Algebraic Geometry · Mathematics 2007-05-23 Ivan Kausz

We generalise partial results about the Yau-Tian-Donaldson correspondence on ruled manifolds to bundles whose fibre is a classical flag variety. This is done using Chern class computations involving the combinatorics of Schur functors. The…

Algebraic Geometry · Mathematics 2015-11-11 Anton Isopoussu

We study the K-stability of a polarised variety with non-reductive automorphism group. We associate a canonical filtration of the co-ordinate ring to each variety of this kind, which destabilises the variety in several examples which we…

Algebraic Geometry · Mathematics 2016-08-15 Giulio Codogni , Ruadhaí Dervan

We construct a moduli space of stable pairs over a smooth projective variety, parametrizing morphisms from a fixed coherent sheaf to a varying sheaf of fixed topological type, subject to a stability condition. This generalizes the notion…

Algebraic Geometry · Mathematics 2018-03-16 Yinbang Lin

For a fixed algebraic variety $X$, curve class $\alpha \in N_1(X)$, and genus $g \in \mathbb N$, we consider the sequence of $S_n$ representations obtained from the homology of the Kontsevich space of stable maps to $X$, $\bar…

Algebraic Geometry · Mathematics 2022-07-07 Philip Tosteson

Let X be an irreducible smooth projective curve, of genus at least two, over an algebraically closed field k. Let $\mathcal{M}^d_G$ denote the moduli stack of principal G-bundles over X of fixed topological type $d \in \pi_1(G)$, where G is…

Algebraic Geometry · Mathematics 2020-12-15 Indranil Biswas , Tomás L. Gómez , Norbert Hoffmann

We extend and improve the existing characterization of the dynamics of general quadratic real polynomial maps with coefficients that depend on a single parameter $\lambda$, and generalize this characterization to cubic real polynomial maps,…

Chaotic Dynamics · Physics 2015-02-17 Fermin Franco-Medrano , Francisco J. Solis

Let $C$ be a nonsingular projective curve of genus $g\ge2$ defined over the complex numbers, and let $M_{\xi}$ denote the moduli space of stable bundles of rank $n$ and determinant $\xi$ on $C$, where $\xi$ is a line bundle of degree $d$ on…

alg-geom · Mathematics 2008-02-03 V. Balaji , L. Brambila Paz , P. E. Newstead

We prove a new kind of homological stability theorem for automorphism groups of finitely-generated projective modules over Dedekind domains, which takes into account all possible stabilisation maps between these, rather than only…

Commutative Algebra · Mathematics 2024-05-14 Oscar Randal-Williams

In this paper, by introducing a wider class of one-parameter group actions for test configurations, we have a stronger form of the definition of K-stability. This allows us to obtain some key step of my preceding work in proving that…

Differential Geometry · Mathematics 2009-10-27 Toshiki Mabuchi

We introduce a notion of stability for sheaves with respect to several polarisations that generalises the usual notion of Gieseker-stability. We prove, under a boundedness assumption, which we show to hold on threefolds or for rank two…

Algebraic Geometry · Mathematics 2016-07-20 Daniel Greb , Julius Ross , Matei Toma

We apply results on inducing stability conditions to local Calabi-Yau threefolds and obtain applications to Donaldson-Thomas (DT) theory. A basic example is the total space of the canonical bundle of $Z=\mathbb{P}^1\times \mathbb{P}^1$. We…

Algebraic Geometry · Mathematics 2024-12-12 Tom Bridgeland , Fabrizio Del Monte , Luca Giovenzana

We extend the framework of K-stability (Tian, Donaldson) to more general algebro-geometric setting, such as partial desingularisations of (fixed) singularities, (not necessarily flat) families over higher dimensional base and the classical…

Algebraic Geometry · Mathematics 2014-11-21 Yuji Odaka

This is the first in a pair of papers developing a framework for the application of logarithmic structures in the study of singular curves of genus $1$. We construct a smooth and proper moduli space dominating the main component of…

Algebraic Geometry · Mathematics 2020-03-31 Dhruv Ranganathan , Keli Santos-Parker , Jonathan Wise

A monomial self-map $f$ on a complex toric variety is said to be $k$-stable if the action induced on the $2k$-cohomology is compatible with iteration. We show that under suitable conditions on the eigenvalues of the matrix of exponents of…

Dynamical Systems · Mathematics 2013-04-05 Jan-Li Lin , Elizabeth Wulcan

In 1980, I. Morrison proved that slope stability of a vector bundle of rank 2 over a compact Riemann surface implies Chow stability of the projectivization of the bundle with respect to certain polarizations. Using the notion of balanced…

Differential Geometry · Mathematics 2019-12-19 Reza Seyyedali

We identify the stable surfaces around the stable limit of the examples of Y. Lee and J. Park [LP07], and H. Park, J. Park and D. Shin [PPS09] using the explicit 3-fold Mori theory in [HTU13]. These surfaces belong to the…

Algebraic Geometry · Mathematics 2015-07-02 Giancarlo Urzúa

We extend and improve the existing characterization of the dynamics of general quadratic real polynomial maps with coefficients that depend on a single parameter $\lambda$, and generalize this characterization to cubic real polynomial maps,…

Dynamical Systems · Mathematics 2017-10-09 Fermin Franco