Defining parameters
Level: | \( N \) | \(=\) | \( 128 = 2^{7} \) |
Weight: | \( k \) | \(=\) | \( 3 \) |
Character orbit: | \([\chi]\) | \(=\) | 128.f (of order \(4\) and degree \(2\)) |
Character conductor: | \(\operatorname{cond}(\chi)\) | \(=\) | \( 16 \) |
Character field: | \(\Q(i)\) | ||
Newform subspaces: | \( 2 \) | ||
Sturm bound: | \(48\) | ||
Trace bound: | \(3\) | ||
Distinguishing \(T_p\): | \(3\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{3}(128, [\chi])\).
Total | New | Old | |
---|---|---|---|
Modular forms | 80 | 20 | 60 |
Cusp forms | 48 | 12 | 36 |
Eisenstein series | 32 | 8 | 24 |
Trace form
Decomposition of \(S_{3}^{\mathrm{new}}(128, [\chi])\) into newform subspaces
Label | Dim | $A$ | Field | CM | Traces | $q$-expansion | |||
---|---|---|---|---|---|---|---|---|---|
$a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | ||||||
128.3.f.a | $6$ | $3.488$ | 6.0.399424.1 | None | \(0\) | \(-2\) | \(2\) | \(4\) | \(q+\beta _{4}q^{3}+(1-\beta _{1}+\beta _{2}+\beta _{4})q^{5}+(-\beta _{2}+\cdots)q^{7}+\cdots\) |
128.3.f.b | $6$ | $3.488$ | 6.0.399424.1 | None | \(0\) | \(2\) | \(2\) | \(-4\) | \(q-\beta _{5}q^{3}+(1+\beta _{1}+\beta _{3}+\beta _{5})q^{5}+(\beta _{2}+\cdots)q^{7}+\cdots\) |
Decomposition of \(S_{3}^{\mathrm{old}}(128, [\chi])\) into lower level spaces
\( S_{3}^{\mathrm{old}}(128, [\chi]) \cong \) \(S_{3}^{\mathrm{new}}(16, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{3}^{\mathrm{new}}(32, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{3}^{\mathrm{new}}(64, [\chi])\)\(^{\oplus 2}\)