Defining parameters
Level: | \( N \) | \(=\) | \( 684 = 2^{2} \cdot 3^{2} \cdot 19 \) |
Weight: | \( k \) | \(=\) | \( 3 \) |
Character orbit: | \([\chi]\) | \(=\) | 684.g (of order \(2\) and degree \(1\)) |
Character conductor: | \(\operatorname{cond}(\chi)\) | \(=\) | \( 4 \) |
Character field: | \(\Q\) | ||
Newform subspaces: | \( 4 \) | ||
Sturm bound: | \(360\) | ||
Trace bound: | \(2\) | ||
Distinguishing \(T_p\): | \(5\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{3}(684, [\chi])\).
Total | New | Old | |
---|---|---|---|
Modular forms | 248 | 90 | 158 |
Cusp forms | 232 | 90 | 142 |
Eisenstein series | 16 | 0 | 16 |
Trace form
Decomposition of \(S_{3}^{\mathrm{new}}(684, [\chi])\) into newform subspaces
Label | Dim | $A$ | Field | CM | Traces | $q$-expansion | |||
---|---|---|---|---|---|---|---|---|---|
$a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | ||||||
684.3.g.a | $4$ | $18.638$ | \(\Q(\sqrt{-3}, \sqrt{-19})\) | None | \(4\) | \(0\) | \(4\) | \(0\) | \(q+(1-\beta _{1})q^{2}+(-2-2\beta _{1})q^{4}+(2-2\beta _{2}+\cdots)q^{5}+\cdots\) |
684.3.g.b | $14$ | $18.638$ | \(\mathbb{Q}[x]/(x^{14} - \cdots)\) | None | \(-2\) | \(0\) | \(0\) | \(0\) | \(q-\beta _{1}q^{2}+\beta _{2}q^{4}-\beta _{10}q^{5}+(\beta _{3}+\beta _{5}+\cdots)q^{7}+\cdots\) |
684.3.g.c | $36$ | $18.638$ | None | \(-4\) | \(0\) | \(-8\) | \(0\) | ||
684.3.g.d | $36$ | $18.638$ | None | \(0\) | \(0\) | \(0\) | \(0\) |
Decomposition of \(S_{3}^{\mathrm{old}}(684, [\chi])\) into lower level spaces
\( S_{3}^{\mathrm{old}}(684, [\chi]) \cong \) \(S_{3}^{\mathrm{new}}(12, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{3}^{\mathrm{new}}(36, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{3}^{\mathrm{new}}(76, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{3}^{\mathrm{new}}(228, [\chi])\)\(^{\oplus 2}\)