On reduced Beltrami equations and linear families of quasiregular mappings

Abstract

This paper studies linear classes of planar quasiregular mappings. We give a positive answer to a conjecture of K. Astala, T. Iwaniec, and G. Martin (2009) on reduced Beltrami equations. Moreover, we use it to prove a Wronsky-type theorem for general linear Beltrami systems. This is a key to show that the associated Beltrami equation of a linear quasiregular family is unique.

arXiv comment17 pages, Theorem 1.3 extended and the text flow improved

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