Results 51 to 60 of about 10,120 (154)

Numerical treatments for solving nonlinear mixed integral equation

open access: yesAlexandria Engineering Journal, 2016
We consider a mixed type of nonlinear integral equation (MNLIE) of the second kind in the space C[0,T]×L2(Ω ...
M.A. Abdou, M. Basseem
doaj   +1 more source

Optimal Rendezvous Guidance Using Linear Quadratic Control

open access: yesMATEC Web of Conferences, 2016
This paper handles with an energy optimal guidance law for rendezvous mission, based on linear quadratic control (LQC) problem. Rendezvous of two satellites are expressed by a nonlinear relative orbit dynamic model.
Moon Gun-Hee   +3 more
doaj   +1 more source

Inverse Problems for the Quadratic Pencil of the Sturm-Liouville Equations with Impulse

open access: yesAbstract and Applied Analysis, 2013
In this study some inverse problems for a boundary value problem generated with a quadratic pencil of Sturm-Liouville equations with impulse on a finite interval are considered.
Rauf Kh. Amırov, A. Adiloglu Nabıev
doaj   +1 more source

Convexity and quadratic monotone approximation in delay differential equations

open access: yesJournal of Numerical Analysis and Approximation Theory, 2001
In this paper the method of quasiliniarization, an application of Newton's method, recently generalized in [1], is used for the quadratic, monotonic, bilateral approximation of the solution of the delay problem (5).
Radu Precup
doaj   +2 more sources

Differential equations, recurrence relations, and quadratic constraints for L-loop two-point massive tadpoles and propagators.

open access: yesJournal of High Energy Physics, 2019
We consider L-loop two-point tadpole (watermelon) integral with arbitrary masses, regularized both dimensionally and analytically. We derive differential equation system and recurrence relations (shifts of dimension and denominator powers).
Roman N. Lee, Andrei A. Pomeransky
doaj   +1 more source

The Symmetrical H_q-Semiclassical Orthogonal Polynomials of Class One

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
We investigate the quadratic decomposition and duality to classify symmetrical H_q-semiclassical orthogonal q-polynomials of class one where H_q is the Hahn's operator.
Abdallah Ghressi, Lotfi Khériji
doaj   +1 more source

Stäackel-type Dynamic Model of the Galaxy Based on Maser Kinematic Data

open access: yesOpen Astronomy, 2016
A dynamic model of the Galaxy is constructed based on kinematic data for masers with trigonometric parallaxes. Maser data is used to compute the model potential in the Galactic plane.
Gromov A. O.   +2 more
doaj   +1 more source

SOLVABILITY OF NONLINEAR HAMMERSTEIN QUADRATIC INTEGRAL EQUATIONS

open access: yesJournal of Nonlinear Sciences and Applications, 2009
We are concerning with a nonlinear Hammerstein quadratic inte- gral equation. We prove the existence of at least one positive solution x 2 L1 under Carathµeodory condition. Secondly we will make a link between Peano condition and Carathµeodory condition to prove the existence of at least one positive continuous solution.
A. M. A. EL-SAYED, H. H. G. HASHEM
openaire   +2 more sources

Solvability of a quadratic integral equation of Fredholm type in Holder spaces

open access: yesElectronic Journal of Differential Equations, 2014
In this article, we prove the existence of solutions of a quadratic integral equation of Fredholm type with a modified argument, in the space of functions satisfying a Holder condition. Our main tool is the classical Schauder fixed point theorem.
Josefa Caballero   +2 more
doaj  

Adaptive Finite Element Method for Optimal Control Problem Governed by Linear Quasiparabolic Integrodifferential Equations

open access: yesAbstract and Applied Analysis, 2012
The mathematical formulation for a quadratic optimal control problem governed by a linear quasiparabolic integrodifferential equation is studied. The control constrains are given in an integral sense: Uad={u∈X;∫ΩUu⩾0, t∈[0,T]}.
Wanfang Shen, Hua Su
doaj   +1 more source

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