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Properties

Label 216.4
Level 216
Weight 4
Dimension 1696
Nonzero newspaces 9
Newform subspaces 24
Sturm bound 10368
Trace bound 4

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Defining parameters

Level: \( N \) = \( 216 = 2^{3} \cdot 3^{3} \)
Weight: \( k \) = \( 4 \)
Nonzero newspaces: \( 9 \)
Newform subspaces: \( 24 \)
Sturm bound: \(10368\)
Trace bound: \(4\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{4}(\Gamma_1(216))\).

Total New Old
Modular forms 4068 1760 2308
Cusp forms 3708 1696 2012
Eisenstein series 360 64 296

Trace form

\( 1696 q - 8 q^{2} - 12 q^{3} - 14 q^{4} + 10 q^{5} - 12 q^{6} + 10 q^{7} - 2 q^{8} - 24 q^{9} + O(q^{10}) \) \( 1696 q - 8 q^{2} - 12 q^{3} - 14 q^{4} + 10 q^{5} - 12 q^{6} + 10 q^{7} - 2 q^{8} - 24 q^{9} - 86 q^{10} + 28 q^{11} - 12 q^{12} + 6 q^{13} - 74 q^{14} - 144 q^{15} - 74 q^{16} - 242 q^{17} - 12 q^{18} - 38 q^{19} + 274 q^{20} - 60 q^{21} + 206 q^{22} - 78 q^{23} - 174 q^{24} + 269 q^{25} - 1370 q^{26} - 459 q^{27} - 668 q^{28} + 6 q^{29} + 228 q^{30} + 550 q^{31} + 1802 q^{32} + 237 q^{33} + 1090 q^{34} + 2070 q^{35} + 2088 q^{36} + 894 q^{37} + 2306 q^{38} + 816 q^{39} + 502 q^{40} - 698 q^{41} - 432 q^{42} + 454 q^{43} - 2070 q^{44} - 1674 q^{45} - 1170 q^{46} - 1068 q^{47} - 2190 q^{48} - 841 q^{49} + 412 q^{50} + 1800 q^{51} + 102 q^{52} + 340 q^{53} - 12 q^{54} - 1810 q^{55} + 1606 q^{56} + 201 q^{57} + 1162 q^{58} - 6383 q^{59} + 3648 q^{60} - 450 q^{61} - 502 q^{62} - 1404 q^{63} - 1490 q^{64} + 26 q^{65} - 3702 q^{66} + 4738 q^{67} - 5898 q^{68} + 96 q^{69} - 4066 q^{70} + 12254 q^{71} - 5976 q^{72} + 3962 q^{73} - 6878 q^{74} + 7122 q^{75} - 4706 q^{76} + 4728 q^{77} - 1950 q^{78} - 1058 q^{79} - 4626 q^{80} - 1116 q^{81} - 2312 q^{82} - 11182 q^{83} + 5598 q^{84} - 5532 q^{85} + 11266 q^{86} - 8586 q^{87} + 3638 q^{88} - 6509 q^{89} + 21078 q^{90} - 3900 q^{91} + 13350 q^{92} + 936 q^{93} + 198 q^{94} + 2248 q^{95} + 3888 q^{96} + 74 q^{97} + 2526 q^{98} - 3762 q^{99} + O(q^{100}) \)

Display 100 coefficients 10 coefficients

Decomposition of \(S_{4}^{\mathrm{new}}(\Gamma_1(216))\)

We only show spaces with even parity, since no modular forms exist when this condition is not satisfied. Within each space \( S_k^{\mathrm{new}}(N, \chi) \) we list available newforms together with their dimension.

Label \(\chi\) Newforms Dimension \(\chi\) degree
216.4.a \(\chi_{216}(1, \cdot)\) 216.4.a.a 1 1
216.4.a.b 1
216.4.a.c 1
216.4.a.d 1
216.4.a.e 2
216.4.a.f 2
216.4.a.g 2
216.4.a.h 2
216.4.c \(\chi_{216}(215, \cdot)\) None 0 1
216.4.d \(\chi_{216}(109, \cdot)\) 216.4.d.a 4 1
216.4.d.b 4
216.4.d.c 16
216.4.d.d 24
216.4.f \(\chi_{216}(107, \cdot)\) 216.4.f.a 24 1
216.4.f.b 24
216.4.i \(\chi_{216}(73, \cdot)\) 216.4.i.a 8 2
216.4.i.b 10
216.4.l \(\chi_{216}(35, \cdot)\) 216.4.l.a 4 2
216.4.l.b 64
216.4.n \(\chi_{216}(37, \cdot)\) 216.4.n.a 68 2
216.4.o \(\chi_{216}(71, \cdot)\) None 0 2
216.4.q \(\chi_{216}(25, \cdot)\) 216.4.q.a 78 6
216.4.q.b 84
216.4.t \(\chi_{216}(13, \cdot)\) 216.4.t.a 636 6
216.4.v \(\chi_{216}(11, \cdot)\) 216.4.v.a 12 6
216.4.v.b 624
216.4.w \(\chi_{216}(23, \cdot)\) None 0 6

Decomposition of \(S_{4}^{\mathrm{old}}(\Gamma_1(216))\) into lower level spaces

\( S_{4}^{\mathrm{old}}(\Gamma_1(216)) \cong \) \(S_{4}^{\mathrm{new}}(\Gamma_1(6))\)\(^{\oplus 9}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(8))\)\(^{\oplus 4}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(9))\)\(^{\oplus 8}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(12))\)\(^{\oplus 6}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(18))\)\(^{\oplus 6}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(24))\)\(^{\oplus 3}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(27))\)\(^{\oplus 4}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(36))\)\(^{\oplus 4}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(54))\)\(^{\oplus 3}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(72))\)\(^{\oplus 2}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_1(108))\)\(^{\oplus 2}\)