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https://www.mathematics.pitt.edu/people/daniel-maienshein Daniel Maienshein | Department of Mathematics | University of Pittsburgh department of mathematics daniel university pittsburgh https://www.mathematics.pitt.edu/content/daniel-maienshein-direct-proof-alexandroff-bakelman-pucci-inequality-plane-viterbos Daniel Maienshein - Direct proof of the Alexandroff-Bakelman-Pucci inequality in the plane via...