Properties

Label 2394.2.by
Level $2394$
Weight $2$
Character orbit 2394.by
Rep. character $\chi_{2394}(647,\cdot)$
Character field $\Q(\zeta_{6})$
Dimension $96$
Newform subspaces $2$
Sturm bound $960$
Trace bound $14$

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Defining parameters

Level: \( N \) \(=\) \( 2394 = 2 \cdot 3^{2} \cdot 7 \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2394.by (of order \(6\) and degree \(2\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 21 \)
Character field: \(\Q(\zeta_{6})\)
Newform subspaces: \( 2 \)
Sturm bound: \(960\)
Trace bound: \(14\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(2394, [\chi])\).

Total New Old
Modular forms 992 96 896
Cusp forms 928 96 832
Eisenstein series 64 0 64

Trace form

\( 96 q + 48 q^{4} - 8 q^{7} + O(q^{10}) \) \( 96 q + 48 q^{4} - 8 q^{7} - 24 q^{10} - 48 q^{16} + 16 q^{22} - 56 q^{25} + 8 q^{28} + 24 q^{31} - 24 q^{40} + 16 q^{43} + 16 q^{46} - 64 q^{49} - 8 q^{58} - 96 q^{64} - 48 q^{67} + 56 q^{70} + 24 q^{73} - 40 q^{79} - 96 q^{82} - 80 q^{85} + 8 q^{88} + 80 q^{91} + O(q^{100}) \)

Decomposition of \(S_{2}^{\mathrm{new}}(2394, [\chi])\) into newform subspaces

Label Char Prim Dim $A$ Field CM Traces Sato-Tate $q$-expansion
$a_{2}$ $a_{3}$ $a_{5}$ $a_{7}$
2394.2.by.a 2394.by 21.g $48$ $19.116$ None \(0\) \(0\) \(0\) \(-4\) $\mathrm{SU}(2)[C_{6}]$
2394.2.by.b 2394.by 21.g $48$ $19.116$ None \(0\) \(0\) \(0\) \(-4\) $\mathrm{SU}(2)[C_{6}]$

Decomposition of \(S_{2}^{\mathrm{old}}(2394, [\chi])\) into lower level spaces

\( S_{2}^{\mathrm{old}}(2394, [\chi]) \cong \) \(S_{2}^{\mathrm{new}}(21, [\chi])\)\(^{\oplus 8}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(42, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(63, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(126, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(399, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(798, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(1197, [\chi])\)\(^{\oplus 2}\)