Properties

Label 1680.4.cl
Level $1680$
Weight $4$
Character orbit 1680.cl
Rep. character $\chi_{1680}(659,\cdot)$
Character field $\Q(\zeta_{4})$
Dimension $1728$
Sturm bound $1536$

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Defining parameters

Level: \( N \) \(=\) \( 1680 = 2^{4} \cdot 3 \cdot 5 \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1680.cl (of order \(4\) and degree \(2\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 240 \)
Character field: \(\Q(i)\)
Sturm bound: \(1536\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{4}(1680, [\chi])\).

Total New Old
Modular forms 2320 1728 592
Cusp forms 2288 1728 560
Eisenstein series 32 0 32

Trace form

\( 1728 q - 264 q^{16} + 48 q^{19} - 736 q^{24} + 1112 q^{30} + 696 q^{34} - 440 q^{36} + 168 q^{46} - 84672 q^{49} + 576 q^{55} - 4272 q^{60} + 1824 q^{61} - 8216 q^{66} - 504 q^{70} - 3304 q^{75} - 5208 q^{76}+ \cdots + 5312 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Decomposition of \(S_{4}^{\mathrm{new}}(1680, [\chi])\) into newform subspaces

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

Decomposition of \(S_{4}^{\mathrm{old}}(1680, [\chi])\) into lower level spaces

\( S_{4}^{\mathrm{old}}(1680, [\chi]) \simeq \) \(S_{4}^{\mathrm{new}}(240, [\chi])\)\(^{\oplus 2}\)