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An explicit formula for the arithmetic-geometric mean in genus 3. (English) Zbl 1131.14038

Summary: The arithmetic-geometric mean algorithm for calculating elliptic integrals of the first type was introduced by Gauss. The analogous algorithm for abelian integrals of genus 2 was introduced by F. Richelot [J. Reine Angew. Math. 16, 221–341 (1837; ERAM 016.0545cj)] and G. Humbert [Journ. de Math. (5) 7, 359–417 (1901; JFM 32.0456.04)]. We present the analogous algorithm for abelian integrals of genus 3.

MSC:

14H40 Jacobians, Prym varieties
14H45 Special algebraic curves and curves of low genus
14Q05 Computational aspects of algebraic curves