2004/03/22 by Steven R. Bell, Bell, Steven R.
Mathematics · #Algebraic and Geometric Analysis #Analytic and geometric function theory #Holomorphic and Operator Theory #math.CV #msc:30C40
paper · pdf · doi:10.48550/arxiv.math/0403371
16 pages. To appear in a Birkhauser volume in honor of Harold Shapiro's 75th birthday. Research supported by NSF grant DMS-0305958
arxiv created 2004/03/22 · arxiv updated 2009/12/01
A streamlined proof that the Bergman kernel associated to a quadrature domain in the plane must be algebraic will be given. A byproduct of the proof will be that the Bergman kernel is a rational function of z and one other explicit function known as the Schwarz function. Simplified proofs of several other well known facts about quadrature domains will fall out along the way. Finally, Bergman representative coordinates will be defined that make subtle alterations to a domain to convert it to a quadrature domain. In such coordinates, biholomorphic mappings become algebraic.