Results 21 to 30 of about 1,278,901 (285)

Use Different Mathematical Methods to Solve Three Dimensional Conduction Heat Equation in Cartesian Coordinate [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2022
In this paper three-dimensional heat conduction equation in cartesian coordinate has been solved in two different methods one of which depends on the separation of variables and the other depends on the integral transform .The results are got and plotted
AHMED SALAR, Ahmed Jassim
doaj   +1 more source

Cartesian Operator Factorization Method for Hydrogen

open access: yesAtoms, 2022
We generalize Schrödinger’s factorization method for Hydrogen from the conventional separation into angular and radial coordinates to a Cartesian-based factorization.
Xinliang Lyu   +2 more
doaj   +1 more source

Modeling of cylindrical composite shell structures based on the Reissner’s Mixed Variational Theorem with a variable separation method

open access: yesAdvanced Modeling and Simulation in Engineering Sciences, 2019
This work deals with the modeling of laminated composite and sandwich shells through a variable separation approach based on a Reissner’s Variational Mixed Theorem (RMVT).
Philippe Vidal   +3 more
doaj   +1 more source

Asymptotic Separation of Variables

open access: yesJournal of Mathematical Analysis and Applications, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Estrada, R., Kanwal, R.P.
openaire   +2 more sources

Separation of variables in the WZW models

open access: yesJournal of High Energy Physics, 2021
We consider dynamics of scalar and vector fields on gravitational backgrounds of the Wess-Zumino-Witten models. For SO(4) and its cosets, we demonstrate full separation of variables for all fields and find a close analogy with a similar separation of ...
Oleg Lunin, Jia Tian
doaj   +1 more source

Separation of Sets of Variables in Quantum Mechanics [PDF]

open access: yes, 1964
Separation of the Schrödinger equation for molecular dynamics into sets of variables can sometimes be performed when separation into individual variables is neither possible nor for certain purposes necesary.
Marcus, R. A.
core   +2 more sources

Control of String Vibrations by Displacement of One End with the Other End Fixed, Given the Deflection Form at an Intermediate Moment of Time

open access: yesAxioms, 2022
We consider a boundary control problem for the equation of string vibration with given initial and final conditions, given the deflection form at an intermediate moment of time.
Vanya Barseghyan, Svetlana Solodusha
doaj   +1 more source

How Can We Manage Repairing a Broken Finite Vibrating String? Formulations of the Problem

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2023
Three approaches to solve a well-known IBVP posed for vibrating composite string with piece-wise constant properties have been applied. The main issue of the stufy is the number of the matching conditions to be imposed for the solution to the IBVP to be ...
Vladimir L. Borsch, Peter I. Kogut
doaj   +1 more source

On the Optimal Control Problem for Vibrations of the Rod/String Consisting of Two Non-Homogeneous Sections with the Condition at an Intermediate Time

open access: yesMathematics, 2022
We consider an optimal boundary control problem for a one-dimensional wave equation consisting of two non-homogenous segments with piecewise constant characteristics. The wave equation describes the longitudinal vibrations of a non-homogeneous rod or the
Vanya Barseghyan, Svetlana Solodusha
doaj   +1 more source

Two-dimensional SUSY-pseudo-Hermiticity without separation of variables [PDF]

open access: yes, 2003
We study SUSY-intertwining for non-Hermitian Hamiltonians with special emphasis to the two-dimensional generalized Morse potential, which does not allow for separation of variables.
Ahmed   +44 more
core   +2 more sources

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