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In this article we address a number of features of the moduli space of spherical metrics on connected, compact, orientable surfaces with conical singularities of assigned angles, such as its non-emptiness and connectedness. We also consider…

Differential Geometry · Mathematics 2019-07-26 Gabriele Mondello , Dmitri Panov

The thesis concerns Hilbert schemes of points and apart from mathematical results, contains small open problems and history sections, see the introduction for more details. The thesis has not been edited since 2017, see first page for more…

Algebraic Geometry · Mathematics 2022-05-24 Joachim Jelisiejew

Hilbert schemes of suitable smooth, projective manifolds of low degree which are 3-fold scrolls over the Hirzebruch surface F_1 are studied. An irreducible component of the Hilbert scheme parametrizing such varieties is shown to be…

Algebraic Geometry · Mathematics 2012-09-26 Gian Mario Besana , Maria Lucia Fania , Flaminio Flamini

We classify the irreducible components of the Hilbert scheme of $n$ points on non-reduced algebraic plane curves, and give a formula for the multiplicities of the irreducible components. The irreducible components are indexed by partitions…

Algebraic Geometry · Mathematics 2023-10-24 Yuze Luan

We give an explicit formula for Euler characteristics of line bundles on the Hilbert scheme of points on $\mathbb{P}^1\times\mathbb{P}^1$. Combined with structural results of Ellingsrud, G\"ottsche, and Lehn, this determines the Euler…

Algebraic Geometry · Mathematics 2024-05-02 Ian Cavey

Closed subschemes in projective space with a fixed Hilbert polynomial are parametrized by a Hilbert scheme. We classify the smooth ones. We identify numerical conditions on a polynomial that completely determine when the Hilbert scheme is…

Algebraic Geometry · Mathematics 2023-01-13 Roy Skjelnes , Gregory G. Smith

We determine the quantum multiplication with divisor classes on the Hilbert scheme of points on an elliptic surface $S \to \Sigma$ for all curve classes which are contracted by the induced fibration $S^{[n]} \to \Sigma^{[n]}$. The formula…

Algebraic Geometry · Mathematics 2023-12-21 Georg Oberdieck , Aaron Pixton

The quotient of a finite-dimensional vector space by the action of a finite subgroup of automorphisms is usually a singular variety. Under appropriate assumptions, the McKay correspondence relates the geometry of nice resolutions of…

Algebraic Geometry · Mathematics 2007-05-23 Samuel Boissiere

Let X be the quasi-projective symplectic surface that is given by the total space of the invertible sheaf O(-2) over the projective line. Let Hilb X be the family of Hilbert schemes of points on X. We give and prove a closed formula…

Algebraic Geometry · Mathematics 2007-05-23 Marc A. Nieper-Wisskirchen

We introduce and analyze a new geometric structure on topological surfaces generalizing the complex structure. To define this so called higher complex structure we use the punctual Hilbert scheme of the plane. The moduli space of higher…

Differential Geometry · Mathematics 2025-07-08 Vladimir V. Fock , Alexander Thomas

We compute generating functions for elliptic genera with values in line bundles on Hilbert schemes of points on surfaces. As an application we also compute generating functions for elliptic genera with values in determinant line bundles on…

Algebraic Geometry · Mathematics 2024-04-17 Lothar Göttsche

We describe several explicit examples of simple abelian surfaces over real quadratic fields with real multiplication and everywhere good reduction. These examples provide evidence for the Eichler-Shimura conjecture for Hilbert modular forms…

Number Theory · Mathematics 2017-07-03 Lassina Dembele , Abhinav Kumar

Let $S$ be a smooth projective surface with $p_g=q=0$. We show how to use derived categorical methods to study the geometry of certain special iterated Hilbert schemes associated to $S$ by showing that they contain a smooth connected…

Algebraic Geometry · Mathematics 2022-05-27 Fabian Reede

Hilbert schemes of suitable smooth, projective 3-fold scrolls over the Hirzebruch surface F_e, with e > 1, are studied. An irreducible component of the Hilbert scheme parametrizing such varieties is shown to be generically smooth of the…

Algebraic Geometry · Mathematics 2015-05-25 Maria Lucia Fania , Flaminio Flamini

We describe algorithms for computing geometric invariants for Hilbert modular surfaces, and we report on their implementation.

We show a few basic results about moduli spaces of semistable modules over Lie algebroids. The first result shows that such moduli spaces exist for relative projective morphisms of noetherian schemes, removing some earlier constraints. The…

Algebraic Geometry · Mathematics 2022-11-15 Adrian Langer

Let $\mathcal{I}_{d,g,r}$ be the union of irreducible components of the Hilbert scheme whose general points correspond to smooth irreducible non-degenerate curves of degree $d$ and genus $g$ in $\mathbb{P}^r$. We use families of curves on…

Algebraic Geometry · Mathematics 2020-03-17 Youngook Choi , Hristo Iliev , Seonja Kim

We study symplectic resolutions of the Hilbert scheme of two points on a surface with one ADE-singularity. We also characterize such singularities by central fibers of their symplectic resolutions. As an application, we show that these…

Algebraic Geometry · Mathematics 2018-03-28 Ryo Yamagishi

The main purpose of this paper is to prove the existence of the moduli space parameterizing the embedded curve singularities of $(k^N,0)$ with an admissible Hilbert polynomial and to study its basic properties.

Algebraic Geometry · Mathematics 2007-10-16 Juan Elias

Let $C$ be a hyperelliptic curve embedded in its Jacobian $J$ via an Abel-Jacobi map. We compute the scheme structure of the Hilbert scheme component of $\textrm{Hilb}_J$ containing the Abel-Jacobi curve as a point. We relate the result to…

Algebraic Geometry · Mathematics 2020-08-05 Andrea T. Ricolfi
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