Hopf Algebras, Polynomial Formal Groups, and Raynaud Orders PDF Download

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Hopf Algebras, Polynomial Formal Groups, and Raynaud Orders

Hopf Algebras, Polynomial Formal Groups, and Raynaud Orders PDF Author: Lindsay Childs
Publisher: American Mathematical Soc.
ISBN: 0821810774
Category : Mathematics
Languages : en
Pages : 133

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Book Description
This volume gives two new methods for constructing $p$-elementary Hopf algebra orders over the valuation ring $R$ of a local field $K$ containing the $p$-adic rational numbers. One method constructs Hopf orders using isogenies of commutative degree 2 polynomial formal groups of dimension $n$, and is built on a systematic study of such formal group laws. The other method uses an exponential generalization of a 1992 construction of Greither. Both constructions yield Raynaud orders as iterated extensions of rank $p$ Hopf algebras; the exponential method obtains all Raynaud orders whose invariants satisfy a certain $p$-adic condition.