Results 21 to 30 of about 43,755 (258)

On the irrationality of moduli spaces of projective hyperk\"ahler manifolds [PDF]

open access: yesÉpijournal de Géométrie Algébrique
The aim of this paper is to estimate the irrationality of moduli spaces of hyperk\"ahler manifolds of types K3$^{[n]}$, Kum$_{n}$, OG6, and OG10. We prove that the degrees of irrationality of these moduli spaces are bounded from above by a universal
Daniele Agostini   +2 more
doaj   +1 more source

Effect of Structural Uncertainty in Passive Microwave Soil Moisture Retrieval Algorithm

open access: yesSensors, 2020
Passive microwave sensors use a radiative transfer model (RTM) to retrieve soil moisture (SM) using brightness temperatures (TB) at low microwave frequencies. Vegetation optical depth (VOD) is a key input to the RTM. Retrieval algorithms can analytically
Lanka Karthikeyan   +3 more
doaj   +1 more source

Modular polynomials for genus 2 [PDF]

open access: yes, 2008
Modular polynomials are an important tool in many algorithms involving elliptic curves. In this article we investigate their generalization to the genus 2 case following pioneering work by Gaudry and Dupont.
Broker, Reinier, Lauter, Kristin
core   +5 more sources

L^p inequalities for polar derivatives of polynomials [PDF]

open access: yesMathematical Inequalities & Applications, 2000
Let \(p(z)=a_0+a_1z+ \cdots+ a_nz^n\) be a polynomial of degree \(n\) and let for fixed \(\alpha\in\mathbb{C}\) \[ D_\alpha p(z):= np(z)+(\alpha-z)p'(z) \] denote the polar derivative of \(p(z)\) with respect to \(\alpha\). In this paper some inequalities for such polar derivatives are presented. In particular it is proved: Theorem.
Govil, N. K., Nyuydinkong, G.
openaire   +1 more source

Isomorphism of Compactifications of Vector Bundles Moduli: Nonreduced Moduli

open access: yesМоделирование и анализ информационных систем, 2015
We continue the study of the compactification of the moduli scheme for Gieseker-semistable vector bundles on a nonsingular irreducible projective algebraic surface S with polarization L, by locally free sheaves.
N. V. Timofeeva
doaj   +1 more source

Pseudoscalar meson photoproduction: from known to undiscovered resonances [PDF]

open access: yes, 1996
The role of dynamics in spin observables for pseudoscalar meson photoproduction is investigated using a density matrix approach in a multipole truncated framework.
A. M. Sandorfi   +19 more
core   +2 more sources

On polar relations of abstract homogeneous polynomials [PDF]

open access: yesTransactions of the American Mathematical Society, 1976
In this paper we generalize, to vector spaces over algebraically closed fields of characteristic zero, two well-known classical results due to Laguerre and Grace, concerning, respectively, the relative location of the zeros of a complex-valued polynomial and its polar-derivative and the relative location of the zeros of two apolar polynomials.
openaire   +2 more sources

Polar cremona transformations and monodromy of polynomials [PDF]

open access: yesStudia Scientiarum Mathematicarum Hungarica, 2010
Consider the gradient map associated to any non-constant homogeneous polynomial f ∈ ℂ[ x0 , ..., xn ] of degree d , defined by \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek ...
openaire   +2 more sources

Linear Toric Fibrations [PDF]

open access: yes, 2013
These notes are based on three lectures given at the 2013 CIME/CIRM summer school. The purpose of this series of lectures is to introduce the notion of a toric fibration and to give its geometrical and combinatorial characterizations.
A. Dickenstein   +12 more
core   +1 more source

Galois representations and Galois groups over Q [PDF]

open access: yes, 2014
In this paper we generalize results of P. Le Duff to genus n hyperelliptic curves. More precisely, let C/Q be a hyperelliptic genus n curve and let J(C) be the associated Jacobian variety.
Arias-de-Reyna, Sara   +5 more
core   +5 more sources

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