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Baker Theorem and Drinfeld Modules

✍ Scribed by L. Denis


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
465 KB
Volume
43
Category
Article
ISSN
0022-314X

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πŸ“œ SIMILAR VOLUMES


Rigidity and Semi-invariants in Drinfeld
✍ Bjorn Poonen πŸ“‚ Article πŸ“… 1995 πŸ› Elsevier Science 🌐 English βš– 592 KB

We show that if \(\phi\) is a Drinfeld \(A\)-module over a field \(L\), then any polynomial \(g(x) \in L[x]\) which maps the a-torsion into itself for all \(a \in A\) must be an endomorphism of \(\phi\). In generic characteristic, we prove a stronger result: if there is an infinite \(A\)-submodule \