2021
DOI: 10.48550/arxiv.2101.07507
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On Deligne's conjecture for symmetric fourth $L$-functions of Hilbert modular forms

Abstract: We prove Deligne's conjecture for symmetric fourth L-functions of Hilbert modular forms. We extend the result of Morimoto [Mor20] based on generalization and refinement of the results of Grobner and Lin [GL20] to cohomological irreducible essentially conjugate self-dual cuspidal automorphic representations of GL 2 and GL 3 over CM-fields.

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Cited by 4 publications
(6 citation statements)
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References 71 publications
(35 reference statements)
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“…More precisely, under the assumptions that κ ě 6, ω " 1, and AutpCq replaced by AutpC{Eq for some bi-quadratic extension E{Q, Morimoto proves that (1.1) holds up to square. In [Che21d], we refine the result of Grobner and Lin, and prove the conjecture for n " 4 assuming κ ě 3. Actually, we have analogous conjecture for symmetric power L-functions associated to normalized Hilbert cusp newforms over a totally real number field F. The conjecture holds for n " 1, 2, 3, 4, 6 by authors mentioned above under similar assumptions.…”
Section: Introductionsupporting
confidence: 65%
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“…More precisely, under the assumptions that κ ě 6, ω " 1, and AutpCq replaced by AutpC{Eq for some bi-quadratic extension E{Q, Morimoto proves that (1.1) holds up to square. In [Che21d], we refine the result of Grobner and Lin, and prove the conjecture for n " 4 assuming κ ě 3. Actually, we have analogous conjecture for symmetric power L-functions associated to normalized Hilbert cusp newforms over a totally real number field F. The conjecture holds for n " 1, 2, 3, 4, 6 by authors mentioned above under similar assumptions.…”
Section: Introductionsupporting
confidence: 65%
“…Note that the results are special cases of Theorem 4.5. On the other hand, when we take Σ be the Kim-Ramakrishnan-Shahidi lift of Π , the algebraicity of these critical values can be expressed in terms of powers of }f Π } using the results [GH93], [GL16], [Mor18], [Che21c], [Che21d], [Har21], [JST21]. We then obtain the period relation (1.3).…”
Section: χ " | | 3wmentioning
confidence: 99%
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“…For r " 2, we prove the conjecture assuming κ ě 6 in [Che22b]. For symmetric even power L-functions, we have the results [Stu80] and [Stu89] of Sturm for Sym 2 , and [Mor21], [Che21b], [Che21c] for Sym 4 and Sym 6 due to Morimoto and the author. For higher r, our result is as follows:…”
Section: Note Thatmentioning
confidence: 55%
“…‚ n " 4, 6: Morimoto [Mor21], C.- [Che21b], [Che21c]. In this paper, we consider the case when n " 5.…”
Section: Introductionmentioning
confidence: 99%