SIMULTANEOUS INVERSION OF THE SOURCE TERM AND INITIAL VALUE OF THE TIME FRACTIONAL DIFFUSION EQUATION
Fan Yang, Jianming Xu, Xiaoxiao Li
Abstract
In this paper, the problem we investigate is to simultaneously identify the source term and initial value of the time fractional diffusion equation. This problem is ill-posed, i.e., the solution (if exists) does not depend on the measurable data. We give the conditional stability result under the a-priori bound assumption for the exact solution. The modified Tikhonov regularization method is used to solve this problem, and under the a-priori and the a-posteriori selection rule for the regularization parameter, the convergence error estimations for this method are obtained. Finally, numerical example is given to prove the effectiveness of this regularization method.
Topics & Concepts
Term (time)Diffusion equationMathematicsMathematical analysisDiffusionAnomalous diffusionInversion (geology)Applied mathematicsStatistical physicsPhysicsComputer scienceInnovation diffusionThermodynamicsGeologyEconomicsKnowledge managementQuantum mechanicsPaleontologyService (business)EconomyStructural basinFractional Differential Equations SolutionsIterative Methods for Nonlinear EquationsNumerical methods in inverse problems