Solution of the inverse problem for an evolution equation in a Banach space

1990 ◽  
Vol 42 (9) ◽  
pp. 1123-1126 ◽  
Author(s):  
E. L. Gorbachuk
Keyword(s):  
Banach Space ◽  
Inverse Problem ◽  
Evolution Equation

An inverse problem for an evolution equation

1991 ◽  
Vol 49 (5) ◽  
pp. 535-540 ◽  
Author(s):  
Yu. S. �idel'man
Keyword(s):  
Inverse Problem ◽  
Evolution Equation

scholarly journals Asymptotic properties of mild solutions of nonautonomous evolution equations with applications to retarded differential equations

1999 ◽  
Vol 4 (3) ◽  
pp. 169-194 ◽  
Author(s):  
Gabriele Gühring ◽  
Frank Räbiger
Keyword(s):  
Banach Space ◽  
Differential Equations ◽  
Evolution Equation ◽  
Unique Solution ◽  
Evolution Equations ◽  
Bounded Solution ◽  
Mild Solutions ◽  
Asymptotic Properties ◽  
Yosida Operator ◽  
Retarded Differential Equations

We investigate the asymptotic properties of the inhomogeneous nonautonomous evolution equation(d/dt)u(t)=Au(t)+B(t)u(t)+f(t),t∈ℝ, where(A,D(A))is a Hille-Yosida operator on a Banach spaceX,B(t),t∈ℝ, is a family of operators inℒ(D(A)¯,X)satisfying certain boundedness and measurability conditions andf∈L loc 1(ℝ,X). The solutions of the corresponding homogeneous equations are represented by an evolution family(UB(t,s))t≥s. For various function spacesℱwe show conditions on(UB(t,s))t≥sandfwhich ensure the existence of a unique solution contained inℱ. In particular, if(UB(t,s))t≥sisp-periodic there exists a unique bounded solutionusubject to certain spectral assumptions onUB(p,0),fandu. We apply the results to nonautonomous semilinear retarded differential equations. For certainp-periodic retarded differential equations we derive a characteristic equation which is used to determine the spectrum of(UB(t,s))t≥s.

scholarly journals An Inverse Problem for a Class of Linear Stochastic Evolution Equations

2012 ◽  
Vol 2012 ◽  
pp. 1-25
Author(s):  
Yuhuan Zhao
Keyword(s):  
Inverse Problem ◽  
Evolution Equation ◽  
Evolution Equations ◽  
Optimal Parameter ◽  
Optimization Method ◽  
Necessary Condition ◽  
Stochastic Evolution Equation ◽  
Stochastic Evolution ◽  
Stochastic Evolution Equations ◽  
Fréchet Differentiable

An inverse problem for a linear stochastic evolution equation is researched. The stochastic evolution equation contains a parameter with values in a Hilbert space. The solution of the evolution equation depends continuously on the parameter and is Fréchet differentiable with respect to the parameter. An optimization method is provided to estimate the parameter. A sufficient condition to ensure the existence of an optimal parameter is presented, and a necessary condition that the optimal parameter, if it exists, should satisfy is also presented. Finally, two examples are given to show the applications of the above results.

scholarly journals Recovery of the matrix quadratic differential pencil from the spectral data

2016 ◽  
Vol 24 (3) ◽  
Author(s):  
Natalia Bondarenko
Keyword(s):  
Banach Space ◽  
Inverse Problem ◽  
Spectral Data ◽  
Quadratic Differential ◽  
Finite Interval ◽  
Spectral Characteristics ◽  
The Matrix ◽  
Method Of Spectral Mappings ◽  
Sturm Liouville ◽  
Liouville Operators

AbstractWe consider a pencil of matrix Sturm–Liouville operators on a finite interval. We study the properties of its spectral characteristics and inverse problems that consist in the recovering of the pencil by the spectral data, that is, eigenvalues and so-called weight matrices. This inverse problem is reduced to a linear equation in a Banach space by the method of spectral mappings. A constructive algorithm for the solution of the inverse problem is provided.

scholarly journals On an inverse problem for fractional evolution equation

2017 ◽  
Vol 6 (1) ◽  
pp. 111-134
Author(s):  
Nguyen Huy Tuan ◽  
◽  
Mokhtar Kirane ◽  
Long Dinh Le ◽  
Van Thinh Nguyen ◽  
...  
Keyword(s):  
Inverse Problem ◽  
Evolution Equation ◽  
Fractional Evolution Equation

scholarly journals On The Solvability of an Inverse Fractional Abstract Cauchy Problems with Conformable Derivative

2021 ◽  
Author(s):  
Lahcen Rabhi ◽  
Mohammed AL HORANI ◽  
R. Khalil
Keyword(s):  
Banach Space ◽  
Inverse Problem ◽  
Sobolev Space ◽  
Existence And Uniqueness ◽  
Parabolic Partial Differential Equations ◽  
Cauchy Problems ◽  
Conformable Derivative ◽  
Equivalent Statement ◽  
Special Cases ◽  
Abstract Cauchy Problems

In this paper, we discuss the solvability of fractional inverse problem for the conformable derivative in Banach space. We establish an equivalent statement of the existence and uniqueness of solution using fractional semigroup. Some special cases of the inverse problem are studied. An application is given to study an inverse problem in a suitable Sobolev space for fractional parabolic partial differential equations with unknown source functions.

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