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Properties

Label 2805.2.df
Level $2805$
Weight $2$
Character orbit 2805.df
Rep. character $\chi_{2805}(109,\cdot)$
Character field $\Q(\zeta_{16})$
Dimension $1728$
Sturm bound $864$

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Defining parameters

Level: \( N \) \(=\) \( 2805 = 3 \cdot 5 \cdot 11 \cdot 17 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2805.df (of order \(16\) and degree \(8\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 935 \)
Character field: \(\Q(\zeta_{16})\)
Sturm bound: \(864\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(2805, [\chi])\).

Total New Old
Modular forms 3520 1728 1792
Cusp forms 3392 1728 1664
Eisenstein series 128 0 128

Trace form

\( 1728 q + O(q^{10}) \) \( 1728 q + 32 q^{11} - 32 q^{25} - 64 q^{26} + 64 q^{31} + 64 q^{49} + 64 q^{55} - 64 q^{69} + 416 q^{70} - 64 q^{75} - 544 q^{80} - 128 q^{86} + 128 q^{91} + 32 q^{99} + O(q^{100}) \)

Display 100 coefficients 10 coefficients

Decomposition of \(S_{2}^{\mathrm{new}}(2805, [\chi])\) into newform subspaces

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

Decomposition of \(S_{2}^{\mathrm{old}}(2805, [\chi])\) into lower level spaces

\( S_{2}^{\mathrm{old}}(2805, [\chi]) \cong \) \(S_{2}^{\mathrm{new}}(935, [\chi])\)\(^{\oplus 2}\)