Boundary behaviour of positive harmonic functions on Lipschitz domains.
Carroll, Tom (2002)
Annales Academiae Scientiarum Fennicae. Mathematica
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Carroll, Tom (2002)
Annales Academiae Scientiarum Fennicae. Mathematica
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Rainer Wittmann (1985)
Mathematische Zeitschrift
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Alano Ancona (1998)
Publicacions Matemàtiques
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Let L be a symmetric second order uniformly elliptic operator in divergence form acting in a bounded Lipschitz domain Ω of R and having Lipschitz coefficients in Ω. It is shown that the Rellich formula with respect to Ω and L extends to all functions in the domain D = {u ∈ H (Ω); L(u) ∈ L(Ω)} of L. This answers a question of A. Chaïra and G. Lebeau.
Björn Dahlbert (1979)
Studia Mathematica
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Carlos E. Kenig (1984-1985)
Séminaire Équations aux dérivées partielles (Polytechnique)
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Shiying Zhao (1994)
Studia Mathematica
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The following results concerning boundary behavior of subharmonic functions in the unit ball of are generalized to nontangential accessible domains in the sense of Jerison and Kenig [7]: (i) The classical theorem of Littlewood on the radial limits. (ii) Ziomek’s theorem on the -nontangential limits. (iii) The localized version of the above two results and nontangential limits of Green potentials under a certain nontangential condition.
Carlos E. Kenig (1983-1984)
Séminaire Équations aux dérivées partielles (Polytechnique)
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Wen Sheng Wang (1995)
Revista Matemática Iberoamericana
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In any C domain, there is nonzero harmonic function C continuous up to the boundary such that the function and its gradient on the boundary vanish on a set of positive measure.
Vilhelm Adolfsson, Luis Escauriaza, Carlos Kenig (1995)
Revista Matemática Iberoamericana
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We show that a harmonic function which vanishes continuously on an open set of the boundary of a convex domain cannot have a normal derivative which vanishes on a subset of positive surface measure. We also prove a similar result for caloric functions vanishing on the lateral boundary of a convex cylinder.
Martin Silverstein, Richard Wheeden (1971)
Studia Mathematica
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