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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)

Canonical subgroups of formal groups


Author: Jonathan Lubin
Journal: Trans. Amer. Math. Soc. 251 (1979), 103-127
MSC: Primary 14L05
MathSciNet review: 531971
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Abstract: Let R be a complete local domain of mixed characteristic. This paper gives a complete answer to the question: ``If F is a one-dimensional formal group over R of finite height, when is there a canonical morphism $ F \to {F'}$ that lifts Frobenius?'' For given height h, a universal family of formal groups F with such a morphism is constructed, and the shape of $ {F'}$ is described for small values of h.


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DOI: http://dx.doi.org/10.1090/S0002-9947-1979-0531971-4
PII: S 0002-9947(1979)0531971-4
Article copyright: © Copyright 1979 American Mathematical Society