Gauss curvature estimates for minimal graphs

Maria Nowak; Magdalena Wołoszkiewicz

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A note on surfaces with radially symmetric nonpositive Gaussian curvature

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It is easily seen that the graphs of harmonic conjugate functions (the real and imaginary parts of a holomorphic function) have the same nonpositive Gaussian curvature. The converse to this statement is not as simple. Given two graphs with the same nonpositive Gaussian curvature, when can we conclude that the functions generating their graphs are harmonic? In this paper, we show that given a graph with radially symmetric nonpositive Gaussian curvature in a certain form, there are (up...