Defining parameters
| Level: | \( N \) | \(=\) | \( 279 = 3^{2} \cdot 31 \) |
| Weight: | \( k \) | \(=\) | \( 1 \) |
| Character orbit: | \([\chi]\) | \(=\) | 279.d (of order \(2\) and degree \(1\)) |
| Character conductor: | \(\operatorname{cond}(\chi)\) | \(=\) | \( 31 \) |
| Character field: | \(\Q\) | ||
| Newform subspaces: | \( 3 \) | ||
| Sturm bound: | \(32\) | ||
| Trace bound: | \(2\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{1}(279, [\chi])\).
| Total | New | Old | |
|---|---|---|---|
| Modular forms | 11 | 5 | 6 |
| Cusp forms | 7 | 4 | 3 |
| Eisenstein series | 4 | 1 | 3 |
The following table gives the dimensions of subspaces with specified projective image type.
| \(D_n\) | \(A_4\) | \(S_4\) | \(A_5\) | |
|---|---|---|---|---|
| Dimension | 4 | 0 | 0 | 0 |
Trace form
Decomposition of \(S_{1}^{\mathrm{new}}(279, [\chi])\) into newform subspaces
| Label | Dim | $A$ | Field | Image | CM | RM | Traces | $q$-expansion | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| $a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | ||||||||
| 279.1.d.a | $1$ | $0.139$ | \(\Q\) | $D_{2}$ | \(\Q(\sqrt{-3}) \), \(\Q(\sqrt{-31}) \) | \(\Q(\sqrt{93}) \) | \(0\) | \(0\) | \(0\) | \(2\) | \(q-q^{4}+2q^{7}+q^{16}-2q^{19}-q^{25}+\cdots\) |
| 279.1.d.b | $1$ | $0.139$ | \(\Q\) | $D_{3}$ | \(\Q(\sqrt{-31}) \) | None | \(1\) | \(0\) | \(1\) | \(-1\) | \(q+q^{2}+q^{5}-q^{7}-q^{8}+q^{10}-q^{14}+\cdots\) |
| 279.1.d.c | $2$ | $0.139$ | \(\Q(\sqrt{3}) \) | $D_{6}$ | \(\Q(\sqrt{-31}) \) | None | \(0\) | \(0\) | \(0\) | \(-2\) | \(q-\beta q^{2}+2q^{4}+\beta q^{5}-q^{7}-\beta q^{8}+\cdots\) |
Decomposition of \(S_{1}^{\mathrm{old}}(279, [\chi])\) into lower level spaces
\( S_{1}^{\mathrm{old}}(279, [\chi]) \cong \) \(S_{1}^{\mathrm{new}}(31, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{1}^{\mathrm{new}}(93, [\chi])\)\(^{\oplus 2}\)