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arxiv: 0901.4324 · v2 · submitted 2009-01-27 · 🧮 math.AP

Boundary blow-up solutions in the unit ball : asymptotics, uniqueness and symmetry

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keywords blow-upboundarynonlinearitiessolutionssymmetryuniquenessapproachasymptotic
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We calculate the full asymptotic expansion of boundary blow-up so- lutions, for any nonlinearity f . Our approach enables us to state sharp qualitative results regarding uniqueness and ra- dial symmetry of solutions, as well as a characterization of nonlinearities for which the blow-up rate is universal. At last, we study in more detail the standard nonlinearities f (u) = u^p, p > 1

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