ProjectReelle Hurwitzzahlen

Basic data

Reelle Hurwitzzahlen
01/03/2016 to 31/10/2017
Abstract / short description:
Hurwitz numbers count ramified covers of a Riemann sphere of a fixed degree and genus and with fixed ramification data. They provide interesting connections between various mathematical areas such as geometry, combinatorics and mathematical physics. In this proposal, we focus on real analogues of Hurwitz numbers. Tropical geometry can be viewed as a degeneration technique associating convex geometry objects to algebraic varieties that preserve many important properties. Tropical geometry has successfully been applied to problems in enumerative geometry, in particular to problems in Hurwitz theory and to real enumerative problems. In this project, we propose the systematic study of real Hurwitz numbers in the context of modern Hurwitz theory. The main tool will be tropical geometry.

On the one hand, we aim at new results in real enumerative geometry with the aid of tropical methods, on the other hand, we also envision progress in the area of tropical geometry, sharpening this tool for its use in Hurwitz theory.
algebraic geometry
Algebraische Geometrie

Involved staff


Rau, Johannes
Department of Mathematics
Faculty of Science
Department of Mathematics
Faculty of Science

Local organizational units

Department of Mathematics
Faculty of Science
University of Tübingen


Bonn, Nordrhein-Westfalen, Germany
Bonn, Nordrhein-Westfalen, Germany

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