Type: Article
Publication Date: 1971-04-01
Citations: 32
DOI: https://doi.org/10.2140/pjm.1971.37.109
Let Ω denote the disc x\ + x\ < r 2 in the x = (xi, x 2 ) plane from which the segment {0 ^ Xi < r, x 2 -0} has been deleted.Suppose that u{x) e C° (Ω) is a solution to the minimal surface equation in Ω((l) below) and attains boundary values /(a?i) e C Utt (0 < a <1) on the slit {0 g x t < r, x 2 = 0}.We shall prove here that the gradient of u, Du = (u Xl ,u X2 ), is continuous at the origin x = 0.veSf JϊJ Evidently, a solution to A, if it exists, satisfies (1) in the set 109