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In this paper, we contribute toward a classification of two-variable polynomials by classifying (up to an automorphism of $C^2$) polynomials whose Newton polygon is either a triangle or a line segment. Our classification has several…

Algebraic Geometry · Mathematics 2007-05-23 Vladimir Shpilrain , Jie-Tai Yu

We investigate the nef cone spanned by the diagonal and the fibre classes of second symmetric product of a curve of genus $g$. This 2-dimensional nef cone gives a characterization of double covers of curves of genus $\le \frac{g-1}{8}$.…

Algebraic Geometry · Mathematics 2008-05-08 Kungho Chan

We prove that the topological recursion formalism can be used to quantize any generic classical spectral curve with smooth ramification points and simply ramified away from poles. For this purpose, we build both the associated quantum…

Mathematical Physics · Physics 2024-03-26 Bertrand Eynard , Elba Garcia-Failde , Olivier Marchal , Nicolas Orantin

Recently Bowden, Hensel and Webb defined the fine curve graph for surfaces, extending the notion of curve graphs for the study of homeomorphism or diffeomorphism groups of surfaces. Later Long, Margalit, Pham, Verberne and Yao proved that…

Geometric Topology · Mathematics 2024-12-25 Frédéric Le Roux , Maxime Wolff

This study defines finite-type invariants for curves on surfaces and reveals the construction of these finite-type invariants for stable homeomorphism classes of curves on compact oriented surfaces without boundaries. These invariants are a…

Geometric Topology · Mathematics 2008-10-15 Noboru Ito

We construct the infinite sequence of invariants for curves in surfaces by using word theory that V. Turaev introduced. For plane closed curves, we add some extra terms, e.g. the rotation number. From these modified invariants, we get the…

Geometric Topology · Mathematics 2007-05-23 Noboru Ito

In the past 20 years, compactifications of the families of curves in algebraic varieties X have been studied via stable maps, Hilbert schemes, stable pairs, unramified maps, and stable quotients. Each path leads to a different enumeration…

Algebraic Geometry · Mathematics 2016-05-10 R. Pandharipande , R. P. Thomas

The dynatomic modular curves parametrize polynomial maps together with a point of period $n$. It is known that the dynatomic curves $Y_1(n)$ are smooth and irreducible in characteristic 0 for families of polynomial maps of the form $f_c(z)…

Dynamical Systems · Mathematics 2019-09-18 John R. Doyle , Holly Krieger , Andrew Obus , Rachel Pries , Simon Rubinstein-Salzedo , Lloyd W. West

Let $k$ be a field of characteristic zero containing a primitive $n$-th root of unity. Let $C^0_n$ be a singular plane curve of degree $n$ over $k$ admitting an order $n$ automorphism, $n$ nodes as the singularities, and $C_n$ be its…

Algebraic Geometry · Mathematics 2016-09-14 Lubjana Beshaj , Takuya Yamauchi

We study the automorphisms of modular curves associated to Cartan subgroups of $\mathrm{GL}_2(\mathbb Z/n\mathbb Z)$ and certain subgroups of their normalizers. We prove that if $n$ is large enough, all the automorphisms are induced by the…

Number Theory · Mathematics 2022-09-28 Valerio Dose , Guido Lido , Pietro Mercuri

We give a combinatorial description of closed curves on oriented surfaces in terms of certain permutations, called charts. We describe automorphisms of curves in terms of charts and compute the total number of curves counted with…

Geometric Topology · Mathematics 2007-05-23 Vladimir Turaev

In this paper a new geometric characterization of the $n$th symmetric product of a curve is given. Specifically, we assume that there exists a chain of smooth subvarieties $V_i$ of dimension $i$, such that $V_i$ is an ample divisor in…

Algebraic Geometry · Mathematics 2015-08-04 Meritxell Sáez

We consider the problem of geometrically approximating a complex analytic curve in the plane by the image of a polynomial parametrization $t \mapsto (x_1(t),x_2(t))$ of bidegree $(d_1,d_2)$. We show the number of such curves is the number…

Algebraic Geometry · Mathematics 2018-07-11 Taylor Brysiewicz

A minimal family of curves on an embedded surface is defined as a 1-dimensional family of rational curves of minimal degree, which cover the surface. We classify such minimal families using constructive methods. This allows us to compute…

Algebraic Geometry · Mathematics 2021-03-09 Niels Lubbes

We study the Chern-Weil theory for the primitive cohomology of a symplectic manifold. First, given a symplectic manifold, we review the superbundle-valued forms on this manifold and prove a primitive version of the Bianchi identity. Second,…

Differential Geometry · Mathematics 2026-01-01 Hao Zhuang

In this paper we develop a bridge between model theory, geometric topology, and geometric group theory. In particular, we investigate the Ivanov Metaconjecture from the point of view of model theory, and more broadly we seek to answer the…

Geometric Topology · Mathematics 2023-06-12 Valentina Disarlo , Thomas Koberda , J. de la Nuez González

In this paper we obtain an explicit formula for the number of curves in a compact complex surface $X$ (passing through the right number of generic points), that has up to one node and one singularity of codimension $k$, provided the total…

Algebraic Geometry · Mathematics 2015-01-08 Somnath Basu , Ritwik Mukherjee

A uniform bound of intersection multiplicities of curves and divisors on abelian varieties is proved by algebraic geometric methods. It extends and improves a result obtained by A. Buium with a different method based on Kolchin's…

Algebraic Geometry · Mathematics 2007-05-23 Junjiro Noguchi , Joerg Winkelmann

This paper is the first part in a series of three papers devoted to the study of enumerative invariants of abelian surfaces through the tropical approach. In this paper, we consider the enumeration of genus $g$ curves of fixed degree…

Algebraic Geometry · Mathematics 2024-11-27 Thomas Blomme

We study the enumerative geometry of algebraic curves on abelian surfaces and threefolds. In the abelian surface case, the theory is parallel to the well-developed study of the reduced Gromov-Witten theory of K3 surfaces. We prove complete…

Algebraic Geometry · Mathematics 2016-12-14 Jim Bryan , Georg Oberdieck , Rahul Pandharipande , Qizheng Yin