Double covers of Kummer surfaces
β Scribed by Afsaneh Mehran
- Publisher
- Springer
- Year
- 2007
- Tongue
- English
- Weight
- 590 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0025-2611
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π SIMILAR VOLUMES
The purpose of this paper is to construct fairly long geometric Goppa codes over F O with rather good parameters by fibre products of some Kummer coverings. This paper also extends the results of Stepanov [1] and Stepanov and O zbudak [2].
Any group of automorphisms of a graph G induces a notion of isomorphism between double covers of G. The corresponding isomorphism classes will be counted.
Let X be a Riemann surface. Two coverings p1 : X β Y1 and p2 : X β Y2 are said to be equivalent if p2 = 'p1 for some conformal homeomorphism ' : Y1 β Y2. In this paper we determine, for each integer g ΒΏ 2, the maximum number R (g) of inequivalent ramiΓΏed coverings between compact Riemann surfaces X