Geodesic
Real zeros of holomorphic Hecke cusp forms and sieving short intervals
Journal of the European Mathematical Society, Tome 18 (2016) no. 1, pp. 123-146.

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We study so-called real zeros of holomorphic Hecke cusp forms, that is, zeros on three geodesic segments on which the cusp form (or a multiple of it) takes real values. Ghosh and Sarnak, who were the first to study this problem, showed the existence of many such zeros if many short intervals contain numbers whose prime factors all belong to a certain subset of the primes.We prove new results concerning this sieving problem which leads to improved lower bounds for the number of real zeros.
DOI : 10.4171/jems/585
Classification : 11-XX
Keywords: Cusp forms, real zeros, sieving short intervals 
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     title = {Real zeros of holomorphic {Hecke} cusp forms and sieving short intervals},
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Kaisa Matomäki. Real zeros of holomorphic Hecke cusp forms and sieving short intervals. Journal of the European Mathematical Society, Tome 18 (2016) no. 1, pp. 123-146. doi : 10.4171/jems/585. http://geodesic.mathdoc.fr/articles/10.4171/jems/585/

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