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The generating functions of the Severi degrees for sufficiently ample line bundles on algebraic surfaces are multiplicative in the topological invariants of the surface and the line bundle. Recently new proofs of this fact were given for…

Algebraic Geometry · Mathematics 2015-11-10 Lothar Göttsche , Benjamin Kikwai

The notion of geometric construction is introduced. This notion allows to compare incidence configurations in the algebraic and tropical plane. We provide an algorithm such that, given a tropical instance of a geometric construction, it…

Algebraic Geometry · Mathematics 2007-10-10 Luis Felipe Tabera

Assume that $K$ is a field and $I_{1}\subsetneq ...\subsetneq I_{t}$ is an ascending chain (of length $t$) of ideals in the polynomial ring $K[x_{1},,...,x_{m}]$, for some $m\geq 1$. Suppose that $I_{j}$ is generated by polynomials of…

Commutative Algebra · Mathematics 2016-05-23 Grzegorz Pastuszak

Starting from certain rational varieties blown-up from (P^1)^N, we construct a tropical, i.e., subtraction-free birational, representation of Weyl groups as a group of pseudo isomorphisms of the varieties. Furthermore, we develop an…

Algebraic Geometry · Mathematics 2008-12-09 Teruhisa Tsuda , Tomoyuki Takenawa

These condensed notes treat some basic notions in Tropical Geometry (varieties, cycles, modifications, equivalence). These topics are to be extended, illustrated and included to the upcoming book project…

Algebraic Geometry · Mathematics 2007-09-10 Grigory Mikhalkin

We prove general Cramer type theorems for linear systems over various extensions of the tropical semiring, in which tropical numbers are enriched with an information of multiplicity, sign, or argument. We obtain existence or uniqueness…

Combinatorics · Mathematics 2015-04-07 Marianne Akian , Stéphane Gaubert , Alexander Guterman

In this paper we describe the multiplier ideals and jumping numbers associated with an irreducible germ of quasi-ordinary hypersurface $(D, 0) \subset (\mathbb{C}^{d+1}, 0)$ by using a toroidal embedded resolution. The approach is motivated…

Algebraic Geometry · Mathematics 2025-10-27 Pedro D. González Pérez , Miguel Robredo Buces

In this paper, we give formulas for $v$-number of edge ideals of some graphs like path, cycle, 1-clique sum of a path and a cycle, 1-clique sum of two cycles and join of two graphs. For an $\mathfrak{m}$-primary monomial ideal $I\subset…

Commutative Algebra · Mathematics 2023-08-21 Prativa Biswas , Mousumi Mandal

We continue, in this second article, the study of the the algebraic tools which play a role in tropical algebra. We especially examine here the polynomial algebras over idempotent semi-fields. this work is motivated by the development of…

Rings and Algebras · Mathematics 2008-09-02 Dominique Castella

Let $A=\{{\bf a}_1,...,{\bf a}_m\} \subset \mathbb{Z}^n$ be a vector configuration and $I_A \subset K[x_1,...,x_m]$ its corresponding toric ideal. The paper consists of two parts. In the first part we completely determine the number of…

Commutative Algebra · Mathematics 2007-05-23 Hara Charalambous , Anargyros Katsabekis , Apostolos Thoma

In this paper we use the connections between tropical algebraic geometry and rigid analytic geometry in order to prove two main results. We use tropical methods to prove a theorem about the Newton polygon for convergent power series in…

Algebraic Geometry · Mathematics 2010-07-19 Joseph Rabinoff

The growth of tropical geometry has generated significant interest in the tropical semiring in the past decade. However, there are other semirings in tropical algebra that provide more information, such as the symmetrized (max, +),…

Commutative Algebra · Mathematics 2018-10-09 Sara Kalisnik Verovsek , Davorin Lesnik

We fix the supports A=(A_1,...,A_k) of a list of tropical polynomials and define the tropical resultant TR(A) to be the set of choices of coefficients such that the tropical polynomials have a common solution. We prove that TR(A) is the…

Algebraic Geometry · Mathematics 2016-08-12 Anders Jensen , Josephine Yu

Over a field of characteristic zero, we prove that for each r, there exists a constant C(r) so that the prime ideal of the rth secant variety of any Veronese embedding of any projective space is generated by polynomials of degree at most…

Commutative Algebra · Mathematics 2017-01-12 Steven V Sam

If (Q,A) is a marked polygon with one interior point, then a general polynomial f in K[x,y] with support A defines an elliptic curve C on the toric surface X_A. If K has a non-archimedean valuation into the real numbers we can tropicalize C…

Combinatorics · Mathematics 2010-03-12 Eric Katz , Hannah Markwig , Thomas Markwig

We give an introduction to Tropical Geometry and prove some results in Tropical Intersection Theory. The first part of this paper is an introduction to tropical geometry aimed at researchers in Algebraic Geometry from the point of view of…

Algebraic Geometry · Mathematics 2010-06-22 Eric Katz

We describe a generating set for the initial ideal of simplicial toric ideals with respect to the graded reverse lexicographic order, using representations of elements of affine monoids as sums of irreducible elements. Although the…

Commutative Algebra · Mathematics 2026-03-10 Ryotaro Hanyu

Let $S$ be a Puiseux series of the germ of an analytically irreducible plane curve $Z$. We provide a new perspective to construct a set of polynomials $F=\{F_1,\ldots, F_{g-1}\}$ associated to $S$, which is a special choice of maximal…

Algebraic Geometry · Mathematics 2019-10-02 Mingyi Zhang

We study the maximal values of Betti numbers of tropical subvarieties of a given dimension and degree in $\mathbb{TP}^n$. We provide a lower estimate for the maximal value of the top Betti number, which naturally depends on the dimension…

Algebraic Geometry · Mathematics 2019-04-03 Benoît Bertrand , Erwan Brugallé , Lucía López de Medrano

Let $R$ be a polynomial ring in $N$ variables over an arbitrary field $K$ and let $I$ be an ideal of $R$ generated by $n$ polynomials of degree at most 2. We show that there is a bound on the projective dimension of $R/I$ that depends only…

Commutative Algebra · Mathematics 2011-06-07 Tigran Ananyan , Melvin Hochster