نتایج جستجو برای: time fractional inverse diffusion problem

تعداد نتایج: 2776381  

Journal: :Visnyk Lvivskogo Universytetu. Seriya Mekhaniko-Matematychna 2020

Journal: : 2022

We study the inverse boundary value problem on determining a space-dependent component in right-hand side of semilinear time fractional diffusion-wave equation. find sufficient conditions for time-local uniqueness solution under time-integral additional condition \[\frac{1}{T}\int_{0}^{T}u(x,t)\eta_1(t)dt=\Phi_1(x), \;\;\;x\in \Omega\subset \Bbb R^n\] where $u$ is unknown first such equation, $...

Journal: :Computers & Mathematics with Applications 2017
Mahmoud S. Alrawashdeh James F. Kelly Mark M. Meerschaert Hans-Peter Scheffler

The inverse tempered stable subordinator is a stochastic process that models power law waiting times between particle movements, with an exponential tempering that allows all moments to exist. This paper shows that the probability density function of an inverse tempered stable subordinator solves a tempered time-fractional diffusion equation, and its ‘‘folded’’ density solves a tempered time-fr...

2011
Mark M. Meerschaert Erkan Nane P. Vellaisamy

The fractional Poisson process is a renewal process with Mittag-Leffler waiting times. Its distributions solve a time-fractional analogue of the Kolmogorov forward equation for a Poisson process. This paper shows that a traditional Poisson process, with the time variable replaced by an independent inverse stable subordinator, is also a fractional Poisson process. This result unifies the two mai...

Journal: :SIAM Journal on Matrix Analysis and Applications 2020

Journal: :Inverse Problems and Imaging 2022

<p style='text-indent:20px;'>We study the well-posedness of a semi-linear fractional diffusion equation and formulate an associated inverse problem. We determine power type nonlinearities from exterior partial measurements Dirichlet-to-Neumann map. Our arguments are based on first order linearization as well parabolic Runge approximation property.</p>

Journal: :Advances in the theory of nonlinear analysis and its applications 2021

In this article, we deal with the inverse problem of identifying unknown source time-fractional diffusion equation in a cylinder by A fractional Landweber method. This is ill-posed. Therefore, regularization required. The main result article error between sought solution and its regularized under selection priori parameter choice rule.

Journal: :Journal of mathematical analysis and applications 2013
Nikolai N Leonenko Mark M Meerschaert Alla Sikorskii

Pearson diffusions are governed by diffusion equations with polynomial coefficients. Fractional Pearson diffusions are governed by the corresponding time-fractional diffusion equation. They are useful for modeling sub-diffusive phenomena, caused by particle sticking and trapping. This paper provides explicit strong solutions for fractional Pearson diffusions, using spectral methods. It also pre...

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