Sekiguchi-Suwa theory revisited
Langue
en
Article de revue
Ce document a été publié dans
Journal de theorie de nombres de Bordeaux. 2014, vol. 26, n° 1, p. 163-200
Résumé en anglais
We present an account of the construction by S. Sekiguchi and N. Suwa of a cyclic isogeny of affine smooth group schemes unifying the Kummer and Artin-Schreier-Witt isogenies. We complete the construction over an arbitrary ...Lire la suite >
We present an account of the construction by S. Sekiguchi and N. Suwa of a cyclic isogeny of affine smooth group schemes unifying the Kummer and Artin-Schreier-Witt isogenies. We complete the construction over an arbitrary base ring. We extend the statements of some results in a form adapted to a further investigation of the models of the group schemes of roots of unity.< Réduire
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