Results 11 to 20 of about 152,398 (281)

Dicritical divisors and Jacobian problem

open access: yesIndian Journal of Pure and Applied Mathematics, 2010
A complex polynomial \(f:\mathbb{C}^{2}\rightarrow \mathbb{C}\) gives rise to a rational map from the projective plane to the projective line (by compactifying \(\mathbb{C}^{2}\) and \(\mathbb{C}\) to the projective spaces). Removing its points of indeterminacy (by blowing up) at points on the line at infinity we get a complex surface on which the map ...
openaire   +4 more sources

Expansion of the Nodal-Adjoint Method for Simple and Efficient Computation of the 2D Tomographic Imaging Jacobian Matrix

open access: yesSensors, 2021
This paper focuses on the construction of the Jacobian matrix required in tomographic reconstruction algorithms. In microwave tomography, computing the forward solutions during the iterative reconstruction process impacts the accuracy and computational ...
Samar Hosseinzadegan   +4 more
doaj   +1 more source

Exploring and Exploiting Conditioning of Reinforcement Learning Agents

open access: yesIEEE Access, 2020
The outcome of Jacobian singular values regularization was studied for supervised learning problems. In supervised learning settings for linear and nonlinear networks, Jacobian regularization allows for faster learning.
Arip Asadulaev   +3 more
doaj   +1 more source

Design of inverse kinematics algorithms: extended Jacobian approximation of the dynamically consistent Jacobian inverse

open access: yesArchives of Control Sciences, 2015
The paper presents the approximation problem of the inverse kinematics algorithms for the redundant manipulators. We introduce the approximation of the dynamically consistent Jacobian by the extended Jacobian.
Ratajczak Joanna
doaj   +1 more source

Sigma-function solution to the general Somos-6 recurrence via hyperelliptic Prym varieties [PDF]

open access: yes, 2015
We construct the explicit solution of the initial value problem for sequences generated by the general Somos-6 recurrence relation, in terms of the Kleinian sigma-function of genus two. For each sequence there is an associated genus two curve \(X\), such
Fedorov, Yuri N., Hone, Andrew N.W.
core   +4 more sources

Remarks on Neumann boundary problems involving Jacobians [PDF]

open access: yesCommunications in Partial Differential Equations, 2017
In this short note we explore the validity of Wente-type estimates for Neumann boundary problems involving Jacobians. We show in particular that such estimates do not in general hold under the same hypotheses on the data for Dirichlet boundary problems.
Da Lio, Francesca, Palmurella, Francesco
openaire   +2 more sources

Jacobian Nullwerte, Periods and Symmetric Equations for Hyperelliptic Curves [PDF]

open access: yes, 2006
We propose a solution to the hyperelliptic Schottky problem, based on the use of Jacobian Nullwerte and symmetric models for hyperelliptic curves.
Guàrdia, J.
core   +3 more sources

A new approach to the stabilization and convergence acceleration in coupled Monte Carlo–CFD calculations: The Newton method via Monte Carlo perturbation theory

open access: yesNuclear Engineering and Technology, 2017
This paper proposes the adoption of Monte Carlo perturbation theory to approximate the Jacobian matrix of coupled neutronics/thermal-hydraulics problems.
Manuele Aufiero, Massimiliano Fratoni
doaj   +1 more source

A novel multidimensional uncalibration method applied to six-axis manipulators

open access: yesFrontiers in Neuroscience, 2023
This study proposes a multidimensional uncalibrated technique for tracking and grasping dynamic targets by a robotic arm in the eye-in-hand mode. This method avoids complex and cumbersome calibration processes, enabling machine vision tasks to be ...
Haitao Qiu   +3 more
doaj   +1 more source

Unscented Particle Filter for Online Total Image Jacobian Matrix Estimation in Robot Visual Servoing

open access: yesIEEE Access, 2019
The main purpose of visual servoing is to control the motion of a robot system based on visual information provided by one or more cameras. It is an important research topic in the robotics community.
Fasheng Wang   +4 more
doaj   +1 more source

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