Discrete and Continuous Versions of the Continuity Principle

Abstract

The goal of this paper is to present a certain generalization of the classical Kontinuitätssatz of Behnke for holomorphic/meromorphic functions in terms of their lift to the envelope of holomorphy. We consider two non-equivalent formulations: “discrete” and “continuous” ones. Giving a proof of the “discrete” version we, somehow unexpectedly, construct a counterexample to the “continuous” one when convergence/continuity of analytic sets is considered in Hausdorff topology or, even in the stronger topology of currents. But we prove the “continuous” version of the Kontinuitätssatz if continuity is understood with respect to the Gromov topology. Our formulations seem to be not yet existing in the literature. A number of relevant examples and open questions are given as well.