%0 Journal Article
%A Díaz Díaz, Jesús Ildefonso
%A Galiano, Gonzalo
%A Padial Molina, Juan Francisco
%T On the uniqueness of solutions of a nonlinear elliptic problem arising in the confinement of a plasma in a stellarator device
%D 1999
%@ 0095-4616
%U https://hdl.handle.net/20.500.14352/57378
%X We study the uniqueness of solutions of a semilinear elliptic problem obtained from an inverse formulation when the nonlinear terms of the equation are prescribed in a general class of real functions, The inverse problem arises in the modeling of the magnetic confinement of a plasma in a Stellarator device. The uniqueness proof relies on an L-infinity-estimate on the solution of an auxiliary nonlocal problem formulated in terms of the relative rearrangement of a datum with respect to the solution.
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