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Preprint Number 549
549. Daniel Hoffmann and Piotr Kowalski
Integrating Hasse-Schmidt derivations
Submission date: 23 December 2012.
We study integrating (that is expanding to a Hasse-Schmidt derivation) derivations, and more generally truncated Hasse-Schmidt derivations, satisfying iterativity conditions given by formal group laws. Our results generalize a theorem of Matsumura about integrating nilpotent derivations. We also prove a non-integrability result concerning certain derivations on projective line.
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