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Properties

Label 22.2.c
Level $22$
Weight $2$
Character orbit 22.c
Rep. character $\chi_{22}(3,\cdot)$
Character field $\Q(\zeta_{5})$
Dimension $4$
Newform subspaces $1$
Sturm bound $6$
Trace bound $0$

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Defining parameters

Level: \( N \) \(=\) \( 22 = 2 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 22.c (of order \(5\) and degree \(4\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 11 \)
Character field: \(\Q(\zeta_{5})\)
Newform subspaces: \( 1 \)
Sturm bound: \(6\)
Trace bound: \(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(22, [\chi])\).

Total New Old
Modular forms 20 4 16
Cusp forms 4 4 0
Eisenstein series 16 0 16

Trace form

\( 4q - q^{2} - 4q^{3} - q^{4} - 6q^{5} + q^{6} + 2q^{7} - q^{8} + 7q^{9} + O(q^{10}) \) \( 4q - q^{2} - 4q^{3} - q^{4} - 6q^{5} + q^{6} + 2q^{7} - q^{8} + 7q^{9} + 4q^{10} - q^{11} + 6q^{12} - 4q^{13} + 2q^{14} + 6q^{15} - q^{16} + 2q^{17} - 8q^{18} - 5q^{19} - 6q^{20} - 12q^{21} - 11q^{22} - 4q^{23} + q^{24} + 9q^{25} + 6q^{26} + 5q^{27} + 2q^{28} + 10q^{29} + 6q^{30} - 2q^{31} + 4q^{32} + 11q^{33} + 2q^{34} + 12q^{35} - 8q^{36} - 18q^{37} + 10q^{38} - 6q^{39} + 4q^{40} - 2q^{41} - 2q^{42} + 6q^{43} + 4q^{44} - 28q^{45} - 4q^{46} - 8q^{47} - 4q^{48} + 3q^{49} - 11q^{50} - 7q^{51} + 6q^{52} - 4q^{53} + 4q^{55} - 8q^{56} + 5q^{57} + 10q^{58} + 5q^{59} - 4q^{60} + 8q^{61} - 2q^{62} + 16q^{63} - q^{64} + 16q^{65} + 16q^{66} + 22q^{67} + 2q^{68} + 14q^{69} - 8q^{70} + 8q^{71} + 7q^{72} - 14q^{73} - 18q^{74} - 9q^{75} - 10q^{76} - 8q^{77} - 16q^{78} - 30q^{79} + 4q^{80} + 14q^{81} - 7q^{82} - 19q^{83} + 8q^{84} + 2q^{85} + 21q^{86} - 20q^{87} - q^{88} - 10q^{89} + 12q^{90} - 12q^{91} + 6q^{92} + 2q^{93} + 12q^{94} - 10q^{95} - 4q^{96} - 3q^{97} - 12q^{98} - 13q^{99} + O(q^{100}) \)

Display 100 coefficients 10 coefficients

Decomposition of \(S_{2}^{\mathrm{new}}(22, [\chi])\) into newform subspaces

Label Dim. \(A\) Field CM Traces $q$-expansion
\(a_2\) \(a_3\) \(a_5\) \(a_7\)
22.2.c.a \(4\) \(0.176\) \(\Q(\zeta_{10})\) None \(-1\) \(-4\) \(-6\) \(2\) \(q-\zeta_{10}q^{2}+(-1+\zeta_{10}-\zeta_{10}^{3})q^{3}+\cdots\)