Error Estimates for Discrete Harmonic 1-forms over Riemann Surfaces

We derive $L^2$ error estimates of computing harmonic or holomorphic 1-forms over a Riemann surface via finite element methods. Locally constant finite elements and first order approximations of the Riemann surface by triangulated meshes are considered. We use in the proof a Bochner type formula and a refined Poincaré inequality over a triangle of arbitrary shape.

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Published 1 January 2006