A Note on Harmonic Functions on surfaces
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🧮 math.AP
keywords
functionsharmonicmetriccompletecurvatureelementaryendowedgaussian
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We review and give elementary proofs of Liouville type properties of harmonic and subharmonic functions in the plane endowed with a complete Riemannian metric, and prove a gap theorem for the possible growth of harmonic functions when this metric has nonnegative Gaussian curvature.
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