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Elsevier, Journal of Pure and Applied Algebra, 2(121), p. 161-208, 1997

DOI: 10.1016/s0022-4049(96)00113-2

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Finite subgroups of formal groups

Journal article published in 1997 by Neil P. Strickland
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We discuss various moduli problems involving the classification of finite subgroups or related structures on formal groups of finite height n. We show that many moduli schemes are smooth or at least Cohen-Macaulay. Moreover, many maps between such schemes are finite and flat, and their degrees can be predicted by thinking of as a “discrete model” for the formal group.