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This volume provides an introduction to dessins d'enfants and embeddings of bipartite graphs in compact Riemann surfaces. The first part of the book presents basic material, guiding the reader through the current field of research. A key point of the second part is the interplay between the automorphism groups of dessins and their Riemann surfaces, and the action of the absolute Galois group on dessins and their algebraic curves. It concludes by showing the links between the theory of dessins and other areas of arithmetic and geometry, such as the abc conjecture, complex multiplication and Beauville surfaces. Dessins d'Enfants on Riemann Surfaces will appeal to graduate students and all mathematicians interested in maps, hypermaps, Riemann surfaces, geometric group actions, and arithmetic.
This volume provides an introduction to dessins d'enfants and embeddings of bipartite graphs in compact Riemann surfaces. The first part of the book presents basic material, guiding the reader through the current field of research. A key point of the second part is the interplay between the automorphism groups of dessins and their Riemann surfaces, and the action of the absolute Galois group on dessins and their algebraic curves. It concludes by showing the links between the theory of dessins and other areas of arithmetic and geometry, such as the abc conjecture, complex multiplication and Beauville surfaces. Dessins d'Enfants on Riemann Surfaces will appeal to graduate students and all mathematicians interested in maps, hypermaps, Riemann surfaces, geometric group actions, and arithmetic.
Eine kombinierte Einfuhrung in die Algebra bis zur Galoistheorie
und ihren klassischen Anwendungen sowie in die Zahlentheorie: Dabei
profitiert die Algebra von den Motivationen und dem reichen
Beispielmaterial der Zahlentheorie; letztere gewinnt an Klarheit
und Kurze durch Strukturen und Satze der Algebra. Es wird solides
Grundwissen fur beide Gebiete vermittelt und gleichzeitig die
Brucke zu neuesten Entwicklungen geschlagen (z. B. diophantische
Probleme, Faktorisierungsmethoden, inverses Problem der
Galoistheorie).
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