Defining parameters
Level: | \( N \) | \(=\) | \( 84 = 2^{2} \cdot 3 \cdot 7 \) |
Weight: | \( k \) | \(=\) | \( 12 \) |
Character orbit: | \([\chi]\) | \(=\) | 84.i (of order \(3\) and degree \(2\)) |
Character conductor: | \(\operatorname{cond}(\chi)\) | \(=\) | \( 7 \) |
Character field: | \(\Q(\zeta_{3})\) | ||
Newform subspaces: | \( 2 \) | ||
Sturm bound: | \(192\) | ||
Trace bound: | \(1\) | ||
Distinguishing \(T_p\): | \(5\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{12}(84, [\chi])\).
Total | New | Old | |
---|---|---|---|
Modular forms | 364 | 30 | 334 |
Cusp forms | 340 | 30 | 310 |
Eisenstein series | 24 | 0 | 24 |
Trace form
Decomposition of \(S_{12}^{\mathrm{new}}(84, [\chi])\) into newform subspaces
Label | Dim | $A$ | Field | CM | Traces | $q$-expansion | |||
---|---|---|---|---|---|---|---|---|---|
$a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | ||||||
84.12.i.a | $14$ | $64.541$ | \(\mathbb{Q}[x]/(x^{14} - \cdots)\) | None | \(0\) | \(1701\) | \(7218\) | \(35001\) | \(q+(3^{5}+3^{5}\beta _{1})q^{3}+(-1031\beta _{1}-\beta _{3}+\cdots)q^{5}+\cdots\) |
84.12.i.b | $16$ | $64.541$ | \(\mathbb{Q}[x]/(x^{16} - \cdots)\) | None | \(0\) | \(-1944\) | \(-2156\) | \(50512\) | \(q+(-3^{5}+3^{5}\beta _{1})q^{3}+(-269\beta _{1}+\beta _{3}+\cdots)q^{5}+\cdots\) |
Decomposition of \(S_{12}^{\mathrm{old}}(84, [\chi])\) into lower level spaces
\( S_{12}^{\mathrm{old}}(84, [\chi]) \cong \) \(S_{12}^{\mathrm{new}}(7, [\chi])\)\(^{\oplus 6}\)\(\oplus\)\(S_{12}^{\mathrm{new}}(14, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{12}^{\mathrm{new}}(21, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{12}^{\mathrm{new}}(28, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{12}^{\mathrm{new}}(42, [\chi])\)\(^{\oplus 2}\)