Abstract
We show that Faà di Bruno’s formula can play important roles in modular forms theory and in the study of differential operators of the form \( \displaystyle \left( a(x)\frac{d}{dx} \right) ^n\). We also emphasize the importance of the fundamental forms \(\displaystyle y_k= \Delta ^{-\frac{k}{12}}, \Delta \) is the discriminant function, making a link between some aspects of differential Galois theory and modular forms.
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Communicated by Daniel Aron Alpay.
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Meguedmi, D., Sebbar, A. Faà di Bruno’s Formula and Modular Forms. Complex Anal. Oper. Theory 10, 409–435 (2016). https://doi.org/10.1007/s11785-015-0494-3
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DOI: https://doi.org/10.1007/s11785-015-0494-3