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In this short note we give an elementary combinatorial argument, showing that the Conjecture of J. Fern\'andez de Bobadilla, I. Luengo, A. Melle-Hern\'andez, A. N\'emethi follows from the results of M. Borodzik and C. Livingston in the case…

Algebraic Geometry · Mathematics 2014-06-13 Piotr Nayar , Barbara Pilat

Jones conjectures the arboreal representation of a degree two rational map will have finite index in the full automorphism group of a binary rooted tree except under certain conditions. We prove a version of Jones' Conjecture for quadratic…

Number Theory · Mathematics 2018-04-20 Jamie Juul , Holly Krieger , Nicole Looper , Michelle Manes , Bianca Thompson , Laura Walton

Chisini's conjecture asserts that for a cuspidal curve $B\subset \mathbb P^2$ a generic morphism $f$ of a smooth projective surface onto $\mathbb P^2$ of degree $\geq 5$, branched along $B$, is unique up to isomorphism. We prove that if…

Algebraic Geometry · Mathematics 2007-05-23 Vik. S. Kulikov

Let $f: S\longrightarrow B$ be a non-trivial fibration from a complex projective smooth surface $S$ to a smooth curve $B$ of genus $b$. Let $c_f$ the Clifford index of the generic fibre $F$ of $f$. In [arXiv:1401.7502v4] it is proved that…

Algebraic Geometry · Mathematics 2017-10-03 Filippo Francesco Favale , Juan Carlos Naranjo , Gian Pietro Pirola

This paper is concerned with rational curves on real classical groups. Our contributions are three-fold: (i) We determine the structure of quadratic rational curves on real classical groups. As a consequence, we completely classify…

Algebraic Geometry · Mathematics 2024-08-09 Zijia Li , Ke Ye

The well-known 1-2-3 Conjecture asserts that the edges of every graph without isolated edges can be weighted with $1$, $2$ and $3$ so that adjacent vertices receive distinct weighted degrees. This is open in general, while it is known to be…

Combinatorics · Mathematics 2019-12-19 Jakub Przybyło

We prove the Gromov conjecture on the macroscopic dimension of the universal covering of a closed spin manifold with a positive scalar curvature under the following assumptions on the fundamental group: 1. The Strong Novikov Conjecture…

Geometric Topology · Mathematics 2009-01-29 Dmitry Bolotov , Alexander Dranishnikov

We present algebraic and geometric arguments that give a complete classification of the rational normal scrolls that are hyperplane section of a given rational normal scrolls.

Algebraic Geometry · Mathematics 2017-09-26 Aldo Conca , Daniele Faenzi

We survey most of the known results concerning the Eisenbud-Green-Harris Conjecture. Our presentation includes new proofs of several theorems, as well as a unified treatment of many results which are otherwise scattered in the literature.…

Commutative Algebra · Mathematics 2022-01-19 Giulio Caviglia , Alessandro De Stefani , Enrico Sbarra

We prove that the $abc$-Conjecture implies upper bounds on Zsigmondy sets that are uniform over families of unicritical polynomials over number fields. As an application, we use the $abc$-Conjecture to prove that there exist uniform bounds…

Number Theory · Mathematics 2017-11-07 Nicole Looper

Let $M$ be the moduli space of rank $2$ stable bundles with fixed determinant of degree $1$ on a smooth projective curve $C$ of genus $g\ge 2$. When $C$ is generic, we show that any elliptic curve on $M$ has degree (respect to…

Algebraic Geometry · Mathematics 2010-11-22 Xiaotao Sun

We discuss some variants of cone theorem for movable curves in any codimensions.

Algebraic Geometry · Mathematics 2020-02-26 Sung Rak Choi , Yoshinori Gongyo

We propose a generalization of tropical curves by dropping the rationality and integrality requirements while preserving the balancing condition. An interpretation of such curves as critical points of a certain quadratic functional allows…

Algebraic Geometry · Mathematics 2018-12-04 Sergei Lanzat , Michael Polyak

The stable rationality of components of the moduli space of (unparametrized) rational curves in projective $n$-space with fixed normal bundle is proved, provided these components dominate the moduli space of immersed rational curves in the…

Algebraic Geometry · Mathematics 2007-05-23 Herbert Clemens

We extend the notion of Clifford index to reduced curves with planar singularities by considering rank 1 torsion free sheaves. We investigate the behaviour of the Clifford index with respect to the combinatorial properties of the curve and…

Algebraic Geometry · Mathematics 2018-09-24 Marco Franciosi

The rainbow arborescence conjecture posits that if the arcs of a directed graph with $n$ vertices are colored by $n-1$ colors such that each color class forms a spanning arborescence, then there is a spanning arborescence that contains…

Combinatorics · Mathematics 2025-12-10 Kristóf Bérczi , Tamás Király , Yutaro Yamaguchi , Yu Yokoi

In this paper, we study double structures supported on rational normal curves. After recalling the general construction of double structures supported on a smooth curve described in \cite{fer}, we specialize it to double structures on…

Algebraic Geometry · Mathematics 2010-02-28 Roberto Notari , Ignacio Ojeda , Maria Luisa Spreafico

The Green-Griffiths-Lang conjecture says that for every complex projective algebraic variety $X$ of general type there exists a proper algebraic subvariety of $X$ containing all nonconstant entire holomorphic curves $f:\mathbb{C} \to X$. We…

Algebraic Geometry · Mathematics 2015-09-17 Gergely Berczi

We prove the Dynamical Andr\'e-Oort (DAO) conjecture proposed by Baker and DeMarco for families of rational maps parameterized by an algebraic curve. In fact, we prove a stronger result, which is a Bogomolov type generalization of DAO for…

Dynamical Systems · Mathematics 2023-09-28 Zhuchao Ji , Junyi Xie

We prove the Categorified Wrapping Number Conjecture for large classes of annular links, including alternating annular links and tangle closures exhibiting plumbed link phenomena. We do so by characterizing when a resolution is sufficient…

Geometric Topology · Mathematics 2025-01-07 Benjamin Daniels , Melissa Zhang