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The Andre-Oort conjecture for products of Drinfeld modular curves

Florian Breuer
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Abstract

Let $Z=X_1\times...\times X_n$ be a product of Drinfeld modular curves. We characterize those algebraic subvarieties $X \subset Z$ containing a Zariski-dense set of CM points, i.e. points corresponding to $n$-tuples of Drinfeld modules with complex multiplication (and suitable level structure). This is a characteristic $p$ analogue of a special case of the André-Oort conjecture. We follow closely the approach used by Bas Edixhoven in characteristic zero, see math.NT/0302138. Note that in this paper we assume that the characteristic $p$ is odd, and we only treat the case of Drinfeld $F_q[T]$-modules.

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Florian Breuer. 2004-07-20. The Andre-Oort conjecture for products of Drinfeld modular curves. https://arxiv.org/abs/math/0303038

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