Results 41 to 50 of about 240,681 (314)

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

Archives 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

Visual Error Constraint Free Visual Servoing Using Novel Switched Part Jacobian Control

IEEE Access, 2022
This research advances the state of the image-based visual servoing (IBVS) of robotic arms to handle very large visual errors without the camera advance/retreat problem.
Zubair Arif, Yili Fu, Muhammad Kashif Siddiqui, Fuhai Zhang   +3 more
doaj   +1 more source

JACOBIAN CONJECTURE, TWO-DIMENSIONAL CASE

Проблемы анализа, 2016
The Jacobian Conjecture was first formulated by O. Keller in 1939. In the modern form it supposes injectivity of the polynomial mapping f: R^n → R^n (C^n → C^n) provided that jacobian J_f ≡ const ≠ 0.
V. V. Starkov
doaj   +1 more source

Completely Decomposable Jacobian Varieties in New Genera [PDF]

Experimental Mathematics, 2016
We present a new technique to study Jacobian variety decompositions using subgroups of the automorphism group of the curve and the corresponding intermediate covers.
J. Paulhus, A. Rojas
semanticscholar   +1 more source

Hyperelliptic Jacobians and isogenies

, 2018
Motivated by results of Mestre and Voisin, in this note we mainly consider abelian varieties isogenous to hyperelliptic Jacobians In the first part we prove that a very general hyperelliptic Jacobian of genus $g\ge 4$ is not isogenous to a non ...
Naranjo, Juan Carlos, Pirola, Gian Pietro   +1 more
core   +1 more source

Decomposable Jacobians

ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE, 2021
In this paper we give examples of smooth projective curves whose Jacobians are isogenus to a product of an arbitrarily high number of ...
Carocca, Angel, Lange, Herbert, Rodríguez, Rubí E.   +2 more
openaire   +2 more sources

A hyper-K\"ahler compactification of the Intermediate Jacobian fibration associated to a cubic fourfold [PDF]

, 2016
For a general cubic fourfold, it was observed by Donagi and Markman that the relative intermediate Jacobian fibration associated to the family of its hyperplane sections carries a natural holomorphic symplectic form making the fibration Lagrangian.
R. Laza, Giulia Saccà, C. Voisin
semanticscholar   +1 more source

Hochschild cohomology versus the Jacobian ring and the Torelli theorem for cubic fourfolds [PDF]

Algebraic Geometry, 2016
The Jacobian ring J(X) of a smooth hypersurface determines its isomorphism type. This has been used by Donagi and others to prove the generic global Torelli theorem for hypersurfaces in many cases. In Voisin's original proof of the global Torelli theorem
D. Huybrechts, J. Rennemo
semanticscholar   +1 more source

A new implementation for online calculation of manipulator Jacobian.

PLoS ONE, 2019
This paper describes a new implementation for calculating Jacobian and its time derivative for robot manipulators in real-time. The estimation of Jacobian is the key in the real-time implementation of kinematics and dynamics of complex planar or spatial ...
Pramod Chembrammel, Thenkurussi Kesavadas   +1 more
doaj   +1 more source

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

IEEE 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, Fuming Sun, Junxing Zhang, Baowei Lin, Xucheng Li   +4 more
doaj   +1 more source