Properties

Label 243.1
Level 243
Weight 1
Dimension 3
Nonzero newspaces 2
Newform subspaces 2
Sturm bound 4374
Trace bound 1

Downloads

Learn more

Defining parameters

Level: \( N \) = \( 243 = 3^{5} \)
Weight: \( k \) = \( 1 \)
Nonzero newspaces: \( 2 \)
Newform subspaces: \( 2 \)
Sturm bound: \(4374\)
Trace bound: \(1\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{1}(\Gamma_1(243))\).

Total New Old
Modular forms 192 99 93
Cusp forms 3 3 0
Eisenstein series 189 96 93

The following table gives the dimensions of subspaces with specified projective image type.

\(D_n\) \(A_4\) \(S_4\) \(A_5\)
Dimension 3 0 0 0

Trace form

\( 3 q + O(q^{10}) \) \( 3 q - 3 q^{19} - 3 q^{28} - 3 q^{37} + 3 q^{64} + 6 q^{73} + 3 q^{91} + O(q^{100}) \)

Decomposition of \(S_{1}^{\mathrm{new}}(\Gamma_1(243))\)

We only show spaces with odd 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
243.1.b \(\chi_{243}(242, \cdot)\) 243.1.b.a 1 1
243.1.d \(\chi_{243}(80, \cdot)\) 243.1.d.a 2 2
243.1.f \(\chi_{243}(26, \cdot)\) None 0 6
243.1.h \(\chi_{243}(8, \cdot)\) None 0 18
243.1.j \(\chi_{243}(2, \cdot)\) None 0 54