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Published in 2019 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.5781
Abstract: In this paper, we study a backward problem for an inhomogeneous fractional diffusion equation in a bounded domain. By applying the properties of Mittag‐Leffler functions and the method of eigenvalue expansion, we establish some results…
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Keywords:
fractional diffusion;
problem;
existence regularity;
backward problem ... See more keywords
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Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.6285
Abstract: In this paper, we consider a backward problem for an inhomogeneous time‐fractional wave equation in a general bounded domain. Such a backward problem is of practically great importance because we often do not know the…
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Keywords:
inhomogeneous time;
problem;
time fractional;
problem inhomogeneous ... See more keywords
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Published in 2020 at "Inverse Problems in Science and Engineering"
DOI: 10.1080/17415977.2020.1795152
Abstract: In this paper we consider the identification of the initial condition for a distributed order diffusion equation. We first prove the unique existence and the regularity properties of the strong solution on the bounded temporal-spacial…
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Keywords:
order diffusion;
distributed order;
backward problem;
diffusion equation ... See more keywords
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Published in 2022 at "Inverse Problems"
DOI: 10.1088/1361-6420/acb007
Abstract: Our aim is to study the backward problem, i.e. recover the initial data from the terminal observation, of the subdiffusion with time dependent coefficients. First of all, by using the smoothing property of solution operators…
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Keywords:
problem;
time;
time dependent;
dependent coefficients ... See more keywords
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Published in 2023 at "Symmetry"
DOI: 10.3390/sym15051057
Abstract: We investigate a backward problem of the time-space fractional symmetric diffusion equation with a source term, wherein the negative Laplace operator −Δ contained in the main equation belongs to the category of uniformly symmetric elliptic…
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Keywords:
problem;
time space;
equation;
space fractional ... See more keywords