Emiliano Torti
In this article we prove level raising for cuspidal eigenforms modulo prime powers (for odd primes) of weight k 2 and arbitrary character, extending the result in weight two established by the work of Tsaknias and Wiese and generalizing (partially) Diamond-Ribet's celebrated level raising theorems.
Here is the ArXiv link: https://arxiv.org/abs/1811.05702
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