Properties

Label 684.3.cd
Level $684$
Weight $3$
Character orbit 684.cd
Rep. character $\chi_{684}(71,\cdot)$
Character field $\Q(\zeta_{18})$
Dimension $480$
Sturm bound $360$

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Defining parameters

Level: \( N \) \(=\) \( 684 = 2^{2} \cdot 3^{2} \cdot 19 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 684.cd (of order \(18\) and degree \(6\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 228 \)
Character field: \(\Q(\zeta_{18})\)
Sturm bound: \(360\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{3}(684, [\chi])\).

Total New Old
Modular forms 1488 480 1008
Cusp forms 1392 480 912
Eisenstein series 96 0 96

Trace form

\( 480 q + 12 q^{4} + O(q^{10}) \) \( 480 q + 12 q^{4} + 60 q^{10} - 48 q^{13} + 84 q^{16} - 12 q^{34} + 1680 q^{49} + 240 q^{52} + 144 q^{58} - 672 q^{61} + 132 q^{64} + 1224 q^{70} - 720 q^{73} - 96 q^{76} - 504 q^{82} + 1824 q^{85} - 1872 q^{88} + O(q^{100}) \)

Decomposition of \(S_{3}^{\mathrm{new}}(684, [\chi])\) into newform subspaces

The newforms in this space have not yet been added to the LMFDB.

Decomposition of \(S_{3}^{\mathrm{old}}(684, [\chi])\) into lower level spaces

\( S_{3}^{\mathrm{old}}(684, [\chi]) \cong \) \(S_{3}^{\mathrm{new}}(228, [\chi])\)\(^{\oplus 2}\)