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arXiv 0907.4507math.NT
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Drinfeld拟模形式无穷远消失阶的估计

Estimating the order of vanishing at infinity of Drinfeld quasi-modular forms

Federico Pellarin

摘要:

我们引入并研究了Drinfeld拟模形式的某些变形,通过使用相应的Anderson的t-动机的刚性解析平凡化。我们证明了这些变形的子代数具有群Z^2 x Z/(q-1)Z的自然分级和齐次自同构,并且我们从这个和其他性质中推导出重数估计。

英文摘要:

We introduce and study certain deformations of Drinfeld quasi-modular forms by using rigid analytic trivialisations of corresponding Anderson's t-motives. We show that a sub-algebra of these deformations has a natural graduation by the group Z^2 x Z/(q-1)Z and an homogeneous automorphism, and we deduce from this and other properties multiplicity estimates.

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