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An exotic example of a tensor product of a CM elliptic curve and a weight 1 form
Ariel Pacetti

Volume 65, no. 2 (2023), pp. 225–228    

Published online: October 16, 2023

https://doi.org/10.33044/revuma.2284

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Abstract

The representation obtained as a tensor product of a rational elliptic curve with a weight 1 modular form is in general an irreducible four-dimensional representation. However, there are some instances where such representation is reducible. In this short article we give an exotic way to obtain such a reducible representation.

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