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Monday, May 4, 2020 | History

4 edition of method of quasi-reversibility found in the catalog.

method of quasi-reversibility

Robert LattГЁs

method of quasi-reversibility

applications to partial differential equations

by Robert LattГЁs

  • 250 Want to read
  • 6 Currently reading

Published by American Elsevier Pub. Co. in New York .
Written in English

    Subjects:
  • Differential equations, Partial -- Numerical solutions

  • Edition Notes

    Statementby R. Lattès and J.-L. Lions. Translated from the French ed. and edited by Richard Bellman.
    SeriesModern analytic and computational methods in science and mathematics,, 18, Modern analytic and computational methods in science and mathematics ;, v. 18.
    ContributionsLions, Jacques Louis, joint author.
    Classifications
    LC ClassificationsQA377 .L3813
    The Physical Object
    Paginationxx, 388 p.
    Number of Pages388
    ID Numbers
    Open LibraryOL5753692M
    ISBN 100444000577
    LC Control Number71079964

    The book starts with a brief overview of the basic principles in data-driven geodynamic modelling, inverse problems, and data assimilation methods, which is then followed by methodological chapters on backward advection, variational (or adjoint), and quasi-reversibility methods. The method of quasi-reversibility has now a quite long history since the pioneering book of Latt es and Lions in [1]. The original idea of these authors was, starting from an ill-posed problem which satisfies the uniqueness property, to introduce a perturbation of such problem involving a .

    Ismail-Zadeh, Alik, Alexander Korotkii, and Igor Tsepelev. “Quasi-Reversibility Method and Its Applications.” In Data-Driven Numerical Modelling in Geodynamics: Methods and Applications, edited by Alexander Korotkii and Igor Tsepelev, 59– SpringerBriefs in Earth Sciences. Cham: Springer International Publishing. 2 Carleman Estimates, Holder Stability and the Quasi-Reversibility Method 4 and of the book [14] for some follow up publications of these authors on BK. Prior publications [35, 36, 74] only the so-called local uniqueness theorems were known for MCIPs with single measurement.

    Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study. The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied. The method of quasi-reversibility Robert Latte s Read. Common Subjects Search for books published by American Elsevier Publishing Company. subjects. G. Stephenson, 1 book John Donald Nisbet, 1 book Kenneth Joseph Arrow, 1 book A. Mary Tropper.


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Method of quasi-reversibility by Robert LattГЁs Download PDF EPUB FB2

Quasi-reversibility and equations of parabolic type --Nonparabolic equations of evolution --Control in the boundary conditions --Quasi-reversibility and analytic continuation of solutions of elliptic equations --Quasi-reversibility and continuation of solutions of parabolic equations --Some extensions.

Series Title. On the method of quasi-reversibility 7 Let us return to the method of quasi-reversibility. Since the function exp (-ao/r), with fixed r> 0 and any a > 0, satisfies the conditions 1)), where / can method of quasi-reversibility book arbitrarily large, we can put fa (a) =exp (u)4^) in the function (6).

In this case, (6) is the same as expression (5), and the theorem shows that Cited by: 2. Quasireversibility differs from reversibility in that a stronger condition is imposed on arrival rates and a weaker condition is applied on probability fluxes.

For example, an M/M/1 queue with state-dependent arrival rates and state-dependent service times is reversible, but not quasireversible. We introduce a new approach based on the coupling of the method of quasi-reversibility and a simple level set method in order to solve the inverse obstacle problem with Dirichlet boundary condition.

() Recovering the initial condition of parabolic equations from lateral Cauchy data via the quasi-reversibility method. Inverse Problems in Science and Engineering 8, Cited by: In this paper we consider thermoacoustic tomography as the inverse problem of determining from lateral Cauchy data the unknown initial conditions in a wave equation with spatially varying coefficients.

This problem also occurs in several applications in the area of medical imaging and nondestructive testing. Using the method of quasi-reversibility, the original ill-posed problem is replaced Cited by: Quasi-Reversibility Method for an Ill-Posed Nonhomogeneous Parabolic Problem Article in Numerical Functional Analysis and Optimization 37(12) · November with 77 Reads How we measure 'reads'.

conduction problem by other mathematicians. The method of Quasi-Reversibility is also introduced. In the second chapter we apply the method of Quasi-Reversibility to the Cauchy problem for the heat equation and obtain a formal approximate solution.

We prove that the convergence of the approximate solution to the presumed exact solutionAuthor: Xueping Ru. May 18,  · Abstract. In this chapter, we introduce a quasi-reversibility (QRV) approach to data assimilation, which allows for incorporating observations (at present) and unknown initial conditions (in the past) for physical parameters (e.g., temperature and flow velocity) into a three-dimensional dynamic model in order to determine the initial lestisserandsduquebec.com by: 1.

In this paper, the Cauchy problem for the modified Helmholtz equation in a rectangular domain is investigated. We use a quasi-reversibility method and a truncation method to solve it and present convergence estimates under two different a priori boundedness assumptions for the exact solution.

The numerical results show that our proposed numerical methods work lestisserandsduquebec.com by: The method of quasi-reversibility; applications to partial differential equations, by R.

Lattes and J.-L. Lions. Translated from the French ed. and edited by Richard Bellman Book. We study the iterated quasi-reversibility method to regularize ill-posed elliptic and parabolic problems: data completion problems for Poisson's and heat equations.

We define an abstract setting to treat both equations at once. We demonstrate the convergence of the regularized solution to the exact one, and propose a strategy to deal with noise on the lestisserandsduquebec.com by: Non-standard backward heat conduction problem is ill-posed in the sense that the solution(if it exists) does not depend continuously on the data.

In this paper, we propose a regularization strategy-quasi-reversibility method to analysis the stability of the problem. Meanwhile, we investigate the roles of regularization parameter in this lestisserandsduquebec.com by: 3.

Jan 01,  · On the other hand, weakening the conditions on the measured data, then combining the duality method in optimization with the quasi-reversibility method, we solve the Cauchy problems for parabolic equations in the presence of noisy lestisserandsduquebec.com by: 1.

The Quasi-Reversibility Method for the lower order terms in Theorem of the book [6]. The above problems were previously solved numerically in [4], [7], [12] and [15]. The work [7] was the first one, where the problem of thermoacoustic tomography was formulated andAuthor: Michael V Klibanov, Sergey I Kabanikhin, Dmitriy V Nechaev, Andrey V Kuzhuget.

We introduce a new approach based on the coupling of the method of quasi-reversibility and a simple level set method in order to solve the inverse obstacle problem with Dirichlet boundary condition.

We provide a theoretical justification of our approach and illustrate its feasibility with the help of numerical experiments in $2D$.Cited by: Mar 01,  · This method is called a quasi-reversibility method.

We use the generalized quasi-reversibility method to change the backward heat system into another system. This paper shows the existence of a strong solution of the modified backward heat system, and derives L 2 -estimates of the difference between a solution of the heat equation with the Author: Hajime Koba, Hideki Matsuoka.

THE QUASI-REVERSIBILITY METHOD FOR THERMOACOUSTIC TOMOGRAPHY IN A HETEROGENEOUS MEDIUM CHRISTIAN CLASON AND MICHAEL V. KLIBANOVy Abstract.

In this paper we consider thermoacoustic tomography as the inverse problem of determining from lateral Cauchy data the unknown initial conditions in a wave equation with spatially varying coe cients.

The book discusses a number of backward and forward methods for inverse design. Backward methods, such as the quasi-reversibility method, the pseudo-reversibility method, and the regularized inverse matrix method, can be used to identify contaminant sources in an enclosed lestisserandsduquebec.com by: 3.

$\begingroup$ Well, I still don't get what this concept actually tells me then. Let's consider an isothermal process that is not quasistatic: You have a box with a gas in it and then you open this box. This one is certainly not quasistatic. In this paper, the Cauchy problem for the modified Helmholtz equation in a rectangular domain is investigated.

We use a quasi-reversibility method and a truncation method to solve it and present convergence estimates under two different a priori boundedness assumptions for the exact solution.Jul 14,  · The book discusses a number of backward and forward methods for inverse design. Backward methods, such as the quasi-reversibility method, the pseudo-reversibility method, and the regularized inverse matrix method, can be used to identify contaminant sources in Cited by: 3.BOOK REVIEWS used in this book, if it is a continuous-time, homogeneous, irredu­ cible, aperiodic Markov chain with a countable set Y' of states x = (x1, ••.

xJ). Usually X; is a nonnegative integer that specifies some attribute of the ith component of the process.

Since a reversible stochastic process is stationary, a reversible.