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Approximation Theory in Transcendental Dynamics Pt IV

[HYBRID WORKSHOP] Introductory Workshop: Complex Dynamics - from special families to natural generalizations in one and several variables February 08, 2022 - February 17, 2022

February 17, 2022 (10:15 AM PST - 11:15 AM PST)
Speaker(s): David Martí-Pete (University of Liverpool)
Location: MSRI: Simons Auditorium, Online/Virtual
  • Approximation Theory

  • transcendental functions

  • Fatou components

Primary Mathematics Subject Classification
Secondary Mathematics Subject Classification

Approximation Theory In Transcendental Dynamics Pt IV


Approximation Theory has been one of the most important tools for constructing functions in Complex Dynamics. In this mini-course, we will give an overview of results and techniques from Approximation Theory that have been used in the area, including Runge’s theorem and Arakelyan's theorem. We will present several versions of these results which help us construct transcendental entire and meromorphic functions with specific properties. We will also give an overview of a paper by Eremenko and Lyubich, which includes some of the earliest applications of Approximation Theory in Transcendental Dynamics.

In the past few years, there has been a resurge in the use of Approximation Theory to obtain wandering domains with interesting dynamics and topology. Benini, Evdoridou, Fagella, Rippon and Stallard constructed examples of wandering domains with several types of internal dynamics that were unknown before. More recently, Marti-Pete, Rempe and Waterman, inspired by work of Boc Thaler, constructed wandering domains with interesting topology, including wandering domains that form Lakes of Wada. We will discuss these two constructions in detail and present some open questions in this area.

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Approximation Theory In Transcendental Dynamics Pt IV

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