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We study the statistical monotonicity of the scalar curvature for the alpha-geometries on the simplex of probability vectors. From the results obtained and from numerical data we are led to some conjectures about quantum alpha-geometries…

Mathematical Physics · Physics 2009-11-10 P. Gibilisco , T. Isola

A great number of theoretical results are known about log Gromov-Witten invariants, but few calculations are worked out. In this paper we restrict to surfaces and to genus 0 stable log maps of maximal tangency. We ask how various natural…

Algebraic Geometry · Mathematics 2021-06-01 Jinwon Choi , Michel van Garrel , Sheldon Katz , Nobuyoshi Takahashi

The univariate Ehrhart and $h^*$-polynomials of lattice polytopes have been widely studied. We describe methods from toric geometry for computing multivariate versions of volume, Ehrhart and $h^*$-polynomials of lattice polytropes, which…

Combinatorics · Mathematics 2023-03-08 Marie-Charlotte Brandenburg , Sophia Elia , Leon Zhang

We derive an algorithm to produce explicit formulas for certain generating functions of double Hurwitz numbers. These formulas generalize a formula of Goulden, Jackson and Vakil for one part double Hurwitz numbers. Immediate consequences…

Combinatorics · Mathematics 2010-08-20 Paul Johnson

For any finite abelian group G, the equivariant Gromov-Witten invariants of C^r/G can be viewed as a certain kind of abelian Hurwitz-Hodge integrals. In this note, we use Tseng's orbifold quantum Riemann-Roch theorem to express this kind of…

Algebraic Geometry · Mathematics 2016-07-27 Bohan Fang , Chiu-Chu Melissa Liu , Zhengyu Zong

We consider the enumeration of tropical curves in M\"obius strips for two different lattice structures and relate them to the enumeration of curves in two rational ruled surfaces over a complex elliptic curve. Using this correspondence, we…

Algebraic Geometry · Mathematics 2023-09-25 Thomas Blomme , Victoria Schleis

Sakovich--Sormani introduced several notions of distance between certain classes of Lorentzian manifolds. These distances use the Hausdorff and Gromov-Hausdorff distances and therefore extend naturally to a broader class of spaces. Here we…

Differential Geometry · Mathematics 2026-05-29 Raquel Perales

We show how to equip the cone complexes of toroidal embeddings with additional structure that allows to define a balancing condition for weighted subcomplexes. We then proceed to develop the foundations of an intersection theory on cone…

Algebraic Geometry · Mathematics 2018-02-07 Andreas Gross

We use techniques from Gromov-Witten theory to construct new invariants of matroids taking value in the Chow groups of spaces of rational curves in the permutohedral toric variety. When the matroid is realizable by a complex hyperplane…

Algebraic Geometry · Mathematics 2022-05-03 Dhruv Ranganathan , Jeremy Usatine

We introduce the notion of a field of covariances, a contravariant functor from non-commutative probability spaces to Hilbert spaces, as the natural categorical analogue of statistical covariance. In the case of finite-dimensional…

Mathematical Physics · Physics 2025-10-29 Florio M. Ciaglia , Fabio Di Cosmo , Laura González-Bravo

Tropical refined invariants of toric surfaces constitute a fascinating interpolation between real and complex enumerative geometries via tropical geometry. They were originally introduced by Block and G\"ottsche, and further extended by…

Combinatorics · Mathematics 2022-03-21 Erwan Brugallé , Andrés Jaramillo Puentes

This article follows our previous work on Campbell-Hausdorff formula. We study the case of symmetric spaces. We recover, by using a Kontsevich's deformation of the Baker-Campbell-Hausdorff formula, Rouviere's results on the convolution of…

Quantum Algebra · Mathematics 2007-05-23 Charles Torossian

We study relative Gromov-Witten theory via universal relations provided by the interaction of degeneration and localization. We find relative Gromov-Witten theory is completely determined by absolute Gromov-Witten theory. The relationship…

Algebraic Geometry · Mathematics 2007-05-23 D. Maulik , R. Pandharipande

Tropical geometry is used to develop a new approach to the theory of discriminants and resultants in the sense of Gel'fand, Kapranov and Zelevinsky. The tropical A-discriminant, which is the tropicalization of the dual variety of the…

Algebraic Geometry · Mathematics 2007-05-23 Alicia Dickenstein , Eva Maria Feichtner , Bernd Sturmfels

By replacing the internal energy with the free energy, as coordinates in a "space of observables", we slightly modify (the known three) non-holonomic geometrizations and show that the coefficients of the curvature tensor field, of the Ricci…

Mathematical Physics · Physics 2023-05-10 Cristina-Liliana Pripoae , Iulia-Elena Hirica , Gabriel-Teodor Pripoae , Vasile Preda

The first part of this work constructs positive-genus real Gromov-Witten invariants of real-orientable symplectic manifolds of odd "complex" dimensions; the present part focuses on their properties that are essential for actually working…

Symplectic Geometry · Mathematics 2018-02-27 Penka Georgieva , Aleksey Zinger

The classical Hurwitz numbers which count coverings of a complex curve have an analog when the curve is endowed with a theta characteristic. These "spin Hurwitz numbers", recently studied by Eskin, Okounkov and Pandharipande, are…

Symplectic Geometry · Mathematics 2012-12-12 Junho Lee , Thomas H. Parker

We describe a formalism based on quantization of quadratic hamiltonians and symplectic actions of loop groups which provides a convenient home for most of known general results and conjectures about Gromov-Witten invariants of compact…

Algebraic Geometry · Mathematics 2007-05-23 Alexander B. Givental

In this work we study, in greater detail than before, J.H. Conway's topographs for integral binary quadratic forms. These are trees in the plane with regions labeled by integers following a simple pattern. Each topograph can display the…

Number Theory · Mathematics 2025-07-25 Cormac O'Sullivan

In the first half of the paper we construct a Morse-type theory on certain spaces of braid diagrams. We define a topological invariant of closed positive braids which is correlated with the existence of invariant sets of parabolic flows…

Dynamical Systems · Mathematics 2007-05-23 R. W. Ghrist , J. B. Van den Berg , R. C. Vandervorst
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