Two-dimensional formal groups: from isomorphism to isogeny (Q1825923)
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scientific article; zbMATH DE number 4122127
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Two-dimensional formal groups: from isomorphism to isogeny |
scientific article; zbMATH DE number 4122127 |
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Two-dimensional formal groups: from isomorphism to isogeny (English)
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1990
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Starting with the normalized Hasse-Witt matrix of a 2-dimensional formal group, we determine the isogeny type in terms of the isomorphism parameters. Basically, this is a matter of choosing a convenient V-basis for the V-localization of the Dieudonné module.
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2-dimensional formal group
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isogeny type
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isomorphism
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Dieudonné module
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