Properties

Label 3856.2.ds
Level $3856$
Weight $2$
Character orbit 3856.ds
Rep. character $\chi_{3856}(41,\cdot)$
Character field $\Q(\zeta_{40})$
Dimension $0$
Newform subspaces $0$
Sturm bound $968$
Trace bound $0$

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Defining parameters

Level: \( N \) \(=\) \( 3856 = 2^{4} \cdot 241 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 3856.ds (of order \(40\) and degree \(16\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 1928 \)
Character field: \(\Q(\zeta_{40})\)
Newform subspaces: \( 0 \)
Sturm bound: \(968\)
Trace bound: \(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(3856, [\chi])\).

Total New Old
Modular forms 7808 0 7808
Cusp forms 7680 0 7680
Eisenstein series 128 0 128

Decomposition of \(S_{2}^{\mathrm{old}}(3856, [\chi])\) into lower level spaces

\( S_{2}^{\mathrm{old}}(3856, [\chi]) \cong \) \(S_{2}^{\mathrm{new}}(1928, [\chi])\)\(^{\oplus 2}\)