Properties

Label 1840.4.cr
Level $1840$
Weight $4$
Character orbit 1840.cr
Rep. character $\chi_{1840}(127,\cdot)$
Character field $\Q(\zeta_{44})$
Dimension $4320$
Sturm bound $1152$

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Defining parameters

Level: \( N \) \(=\) \( 1840 = 2^{4} \cdot 5 \cdot 23 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1840.cr (of order \(44\) and degree \(20\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 460 \)
Character field: \(\Q(\zeta_{44})\)
Sturm bound: \(1152\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{4}(1840, [\chi])\).

Total New Old
Modular forms 17520 4320 13200
Cusp forms 17040 4320 12720
Eisenstein series 480 0 480

Trace form

\( 4320 q + O(q^{10}) \) \( 4320 q - 816 q^{21} + 1776 q^{41} - 816 q^{53} - 5088 q^{57} - 2784 q^{65} + 3504 q^{77} + 38688 q^{81} - 10584 q^{85} - 10416 q^{93} + O(q^{100}) \)

Decomposition of \(S_{4}^{\mathrm{new}}(1840, [\chi])\) into newform subspaces

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

Decomposition of \(S_{4}^{\mathrm{old}}(1840, [\chi])\) into lower level spaces

\( S_{4}^{\mathrm{old}}(1840, [\chi]) \cong \) \(S_{4}^{\mathrm{new}}(460, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(920, [\chi])\)\(^{\oplus 2}\)