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Properties

Label 65.2.b
Level $65$
Weight $2$
Character orbit 65.b
Rep. character $\chi_{65}(14,\cdot)$
Character field $\Q$
Dimension $6$
Newform subspaces $1$
Sturm bound $14$
Trace bound $0$

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Defining parameters

Level: \( N \) \(=\) \( 65 = 5 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 65.b (of order \(2\) and degree \(1\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 5 \)
Character field: \(\Q\)
Newform subspaces: \( 1 \)
Sturm bound: \(14\)
Trace bound: \(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(65, [\chi])\).

Total New Old
Modular forms 10 6 4
Cusp forms 6 6 0
Eisenstein series 4 0 4

Trace form

\( 6 q - 10 q^{4} + 4 q^{6} - 6 q^{9} + O(q^{10}) \) \( 6 q - 10 q^{4} + 4 q^{6} - 6 q^{9} + 2 q^{10} - 12 q^{11} + 8 q^{14} + 16 q^{15} + 10 q^{16} - 20 q^{20} - 4 q^{21} + 16 q^{24} + 2 q^{25} - 6 q^{26} - 12 q^{29} + 8 q^{30} - 20 q^{31} + 20 q^{34} + 8 q^{35} - 22 q^{36} + 8 q^{39} - 34 q^{40} - 8 q^{41} + 40 q^{44} - 4 q^{45} + 32 q^{46} + 18 q^{49} + 16 q^{50} + 24 q^{51} - 68 q^{54} - 16 q^{55} + 40 q^{56} + 16 q^{59} - 12 q^{60} + 12 q^{61} - 66 q^{64} - 2 q^{65} - 16 q^{66} - 24 q^{69} - 20 q^{70} - 24 q^{71} + 4 q^{74} + 16 q^{75} - 20 q^{76} + 32 q^{79} + 48 q^{80} + 46 q^{81} + 12 q^{84} - 12 q^{85} - 32 q^{86} - 20 q^{89} + 70 q^{90} - 4 q^{91} - 32 q^{94} + 16 q^{95} - 36 q^{96} + 16 q^{99} + O(q^{100}) \)

Display 100 coefficients 10 coefficients

Decomposition of \(S_{2}^{\mathrm{new}}(65, [\chi])\) into newform subspaces

Label Char Prim Dim $A$ Field CM Traces Sato-Tate $q$-expansion
$a_{2}$ $a_{3}$ $a_{5}$ $a_{7}$
65.2.b.a 65.b 5.b $6$ $0.519$ 6.0.350464.1 None \(0\) \(0\) \(0\) \(0\) $\mathrm{SU}(2)[C_{2}]$ \(q+(\beta _{3}-\beta _{5})q^{2}+(-\beta _{3}-\beta _{4})q^{3}+(-2+\cdots)q^{4}+\cdots\)