Gauss Harmonic Interpolation Formulas Let R be an open, bounded, simply connected region in the (x,y)-plane and let (x*,y*) be a point in R. Assuming R is starlike with respect to (x*,y*), we discuss a method for computing Gauss harmonic interpolation formulas for R and the point (x*,y*). Such formulas approximate a harmonic function at (x*,y*) in terms of a linear combination of its values at certain selected points on the boundary of R. Such formulas are useful for approximating the solution of the Dirichlet problem for R. CACM August, 1974 Stroud, A. H. interpolation, quadrature, harmonic interpolation, harmonic quadrature, Dirichlet problem 5.13 5.16 5.17 CA740814 JB January 17, 1978 9:23 AM 2610 5 2610 2610 5 2610 2610 5 2610