We give explicit upper bounds for the coefficients of arbitrary weight k, level 2 cusp forms, making Deligne’s well-known bound precise. We also derive asymptotic formulas and explicit upper bounds for the coefficients of certain level 2 modular functions.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-aa168-4-2, author = {Paul Jenkins and Kyle Pratt}, title = {Coefficient bounds for level 2 cusp forms}, journal = {Acta Arithmetica}, volume = {168}, year = {2015}, pages = {341-367}, zbl = {06438363}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa168-4-2} }
Paul Jenkins; Kyle Pratt. Coefficient bounds for level 2 cusp forms. Acta Arithmetica, Tome 168 (2015) pp. 341-367. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-aa168-4-2/