Díaz Díaz, Jesús IldefonsoGaliano, GonzaloPadial Molina, Juan Francisco2023-06-202023-06-2019990095-461610.1007/s002459900098https://hdl.handle.net/20.500.14352/57378We 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.engjournal articlehttp://www.springerlink.com/content/txbb9g2vdymjc6m9/fulltext.pdfhttp://www.springerlink.com/restricted access517.97free-boundary problemrearrangementequilibriumuniqueness of solutionnonlinear elliptic equationsnonlinear equationsrelative rearrangementplasma physicsAnálisis numérico1206 Análisis Numérico