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Paper detail

Distinguishing Hecke eigenforms

We revisit a theorem of Ram Murty about the number of initial Fourier coefficients that two cuspidal eigenforms of different weights can have in common. We prove an explicit upper bound on this number, and give better conditional and unconditional asymptotic upper bounds. Finally, we describe a numerical experiment testing the sharpness of the upper bound in the case of forms of level one.

preprint2010arXivOpen access
Alexandru Ghitza
math.NT
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Alexandru Ghitza

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