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Introduction Dessins d'enfants Discrete Dessins via circle packing Uniformizing Dessins A menagerie of Dessins d'enfants Computational issues Additional constructions Non-equilateral triangulations The discrete option Appendix: Implementation Bibliography.
Chaotic behavior of (even the simplest) iterations of polynomial maps of the complex plane was known for almost one hundred years due to the pioneering work of Farou, Julia, and their contemporaries. However, it was only twenty-five years ago that the first computer generated images illustrating properties of iterations of quadratic maps appeared. These images of the so-called Mandelbrot and Julia sets immediately resulted in a strong resurgence of interest in complex dynamics. The present volume, based on the talks at the conference commemorating the twenty-fifth anniversary of the appearance of Mandelbrot sets, provides a panorama of current research in this truly fascinating area of mathematics.
The French expression “dessins d'enfants” means children's drawings. This term was coined by the great French mathematician Alexandre Grothendieck in order to denominate a method of pictorial representation of some highly interesting classes of polynomials and rational functions. The polynomials studied in this book take their origin in number theory. The authors show how, by drawing simple pictures, one can prove some long-standing conjectures and formulate new ones. The theory presented here touches upon many different fields of mathematics. The major part of the book is quite elementary and is easily accessible to an undergraduate student. The less elementary parts, such as Galois theory or group representations and their characters, would need a more profound knowledge of mathematics. The reader may either take the basic facts of these theories for granted or use our book as a motivation and a first approach to these subjects.
More than 150 articles explore the latest advances in science and technology For more than 45 years, this annual publication has made information on the latest trends and developments in science and technology accessible to non-specialists through concise, well-illustrated articles. Readers will find 150 articles from 200+ leaders in their respective fields covering disciplines from Astronomy to Zoology. The Yearbook will be of interest to students, writers, researchers, professionals, and general readers.
Der vorliegende Band gibt Beitrage wieder, die auf Vortragen der Mainzer Tagung uber Elementare und Analytische Zahlentheorie (24.-28. Mai 2004) basieren, und daruber hinaus einige grosse Ubersichtsartikel zur Abschatzung von Fourier-Koeffizienten von Siegel'schen Spitzenformen, zu neueren Entwicklungen in der Theorie der Gitterpunkte, zum Goldbach-Problem und zur ABC-Vermutung fur Polynome (und "dessins d'enfants"). Die aktuellen Forschungsbeitrage befassen sich mit den verschiedensten Themenbereichen aus der analytischen Zahlentheorie, z.B. zum Waring-Problem, zu Verteilungsfragen fur arithmetische Funktionen, zu Kreisteilungspolynomen, und zur Anwendung von Abschatzungen von Exponentialsummen. Der Band soll auf einigen Teilgebieten der analytischen Zahlentheorie den gegenwartigen Stand der Forschung aufzeigen, und er kann Forschern in der Zahlentheorie Anregungen fur weitere wissenschaftliche Arbeit geben.