Defining parameters
Level: | \( N \) | = | \( 64 = 2^{6} \) |
Weight: | \( k \) | = | \( 20 \) |
Nonzero newspaces: | \( 4 \) | ||
Sturm bound: | \(5120\) | ||
Trace bound: | \(1\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{20}(\Gamma_1(64))\).
Total | New | Old | |
---|---|---|---|
Modular forms | 2468 | 1379 | 1089 |
Cusp forms | 2396 | 1357 | 1039 |
Eisenstein series | 72 | 22 | 50 |
Trace form
Decomposition of \(S_{20}^{\mathrm{new}}(\Gamma_1(64))\)
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 |
---|---|---|---|---|
64.20.a | \(\chi_{64}(1, \cdot)\) | 64.20.a.a | 1 | 1 |
64.20.a.b | 1 | |||
64.20.a.c | 1 | |||
64.20.a.d | 1 | |||
64.20.a.e | 1 | |||
64.20.a.f | 1 | |||
64.20.a.g | 1 | |||
64.20.a.h | 1 | |||
64.20.a.i | 1 | |||
64.20.a.j | 2 | |||
64.20.a.k | 2 | |||
64.20.a.l | 3 | |||
64.20.a.m | 3 | |||
64.20.a.n | 4 | |||
64.20.a.o | 4 | |||
64.20.a.p | 5 | |||
64.20.a.q | 5 | |||
64.20.b | \(\chi_{64}(33, \cdot)\) | 64.20.b.a | 2 | 1 |
64.20.b.b | 12 | |||
64.20.b.c | 24 | |||
64.20.e | \(\chi_{64}(17, \cdot)\) | 64.20.e.a | 74 | 2 |
64.20.g | \(\chi_{64}(9, \cdot)\) | None | 0 | 4 |
64.20.i | \(\chi_{64}(5, \cdot)\) | n/a | 1208 | 8 |
"n/a" means that newforms for that character have not been added to the database yet
Decomposition of \(S_{20}^{\mathrm{old}}(\Gamma_1(64))\) into lower level spaces
\( S_{20}^{\mathrm{old}}(\Gamma_1(64)) \cong \) \(S_{20}^{\mathrm{new}}(\Gamma_1(1))\)\(^{\oplus 7}\)\(\oplus\)\(S_{20}^{\mathrm{new}}(\Gamma_1(2))\)\(^{\oplus 6}\)\(\oplus\)\(S_{20}^{\mathrm{new}}(\Gamma_1(4))\)\(^{\oplus 5}\)\(\oplus\)\(S_{20}^{\mathrm{new}}(\Gamma_1(8))\)\(^{\oplus 4}\)\(\oplus\)\(S_{20}^{\mathrm{new}}(\Gamma_1(16))\)\(^{\oplus 3}\)\(\oplus\)\(S_{20}^{\mathrm{new}}(\Gamma_1(32))\)\(^{\oplus 2}\)