Geodesic
Inverse problem for the diffusion equation in the case of spherical symmetry
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 53 (2013) no. 11, pp. 1784-1790

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The initial boundary value problem for the diffusion equation is considered in the case of spherical symmetry and an unknown initial condition. Additional information used for determining the unknown initial condition is an external volume potential whose density is the Laplace operator applied to the solution of the initial boundary value problem. The uniqueness of the solution of the inverse problem is studied depending on the parameters entering into the boundary conditions. It is shown that the solution of the inverse problem is either unique or not unique up to a one-dimensional linear subspace. 
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     author = {A. M. Denisov and S. I. Solov'eva},
     title = {Inverse problem for the diffusion equation in the case of spherical symmetry},
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A. M. Denisov; S. I. Solov'eva. Inverse problem for the diffusion equation in the case of spherical symmetry. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 53 (2013) no. 11, pp. 1784-1790. http://geodesic.mathdoc.fr/item/ZVMMF_2013_53_11_a2/