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A Riemann-Hurwitz Formula for Hypermaps Congruences

✍ Scribed by Cacciari, Leo

Book ID
123060900
Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
451 KB
Volume
10
Category
Article
ISSN
0195-6698

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πŸ“œ SIMILAR VOLUMES

A Riemann-Hurwitz Formula for thep-Rank
A Riemann-Hurwitz Formula for thep-Rank of Ideal Class Groups of CM-Fields
✍ Kay Wingberg πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 486 KB

In this note we prove an analogue of the classical Riemann-Hurwitz formula for the minus part of the p-rank of S-ideal class groups of algebraic CM-fields. The result is an improvement of Kida's formula for the cyclotomic Z p -extension.