Cassels's conjecture on Maass forms with eigenvalue one quarter
Let be a Maass form with Laplace eigenvalue . Cassels's conjecture. Must arise from a Galois representation? The source presents this as an open conjectural question, with no resolution supplied.
References
Primary source
Stephen S. Gelbart and Stephen D. Miller, “Riemann's Zeta Function and Beyond”, arXiv:math/0309478 (2003).
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