Properties

Label 1764.4.cu
Level $1764$
Weight $4$
Character orbit 1764.cu
Rep. character $\chi_{1764}(17,\cdot)$
Character field $\Q(\zeta_{42})$
Dimension $672$
Sturm bound $1344$

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Defining parameters

Level: \( N \) \(=\) \( 1764 = 2^{2} \cdot 3^{2} \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1764.cu (of order \(42\) and degree \(12\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 147 \)
Character field: \(\Q(\zeta_{42})\)
Sturm bound: \(1344\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{4}(1764, [\chi])\).

Total New Old
Modular forms 12240 672 11568
Cusp forms 11952 672 11280
Eisenstein series 288 0 288

Trace form

\( 672 q + 4 q^{7} + O(q^{10}) \) \( 672 q + 4 q^{7} + 72 q^{19} + 1484 q^{25} + 708 q^{31} - 2408 q^{37} - 784 q^{43} + 4976 q^{49} - 1092 q^{55} - 6964 q^{61} + 1792 q^{67} + 2700 q^{73} + 364 q^{79} - 1008 q^{85} - 7344 q^{91} + O(q^{100}) \)

Decomposition of \(S_{4}^{\mathrm{new}}(1764, [\chi])\) into newform subspaces

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

Decomposition of \(S_{4}^{\mathrm{old}}(1764, [\chi])\) into lower level spaces

\( S_{4}^{\mathrm{old}}(1764, [\chi]) \cong \) \(S_{4}^{\mathrm{new}}(147, [\chi])\)\(^{\oplus 6}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(294, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(441, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(588, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(882, [\chi])\)\(^{\oplus 2}\)