Defining parameters
Level: | \( N \) | \(=\) | \( 930 = 2 \cdot 3 \cdot 5 \cdot 31 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 930.z (of order \(10\) and degree \(4\)) |
Character conductor: | \(\operatorname{cond}(\chi)\) | \(=\) | \( 155 \) |
Character field: | \(\Q(\zeta_{10})\) | ||
Newform subspaces: | \( 4 \) | ||
Sturm bound: | \(384\) | ||
Trace bound: | \(1\) | ||
Distinguishing \(T_p\): | \(7\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{2}(930, [\chi])\).
Total | New | Old | |
---|---|---|---|
Modular forms | 800 | 128 | 672 |
Cusp forms | 736 | 128 | 608 |
Eisenstein series | 64 | 0 | 64 |
Trace form
Decomposition of \(S_{2}^{\mathrm{new}}(930, [\chi])\) into newform subspaces
Label | Dim | $A$ | Field | CM | Traces | $q$-expansion | |||
---|---|---|---|---|---|---|---|---|---|
$a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | ||||||
930.2.z.a | $8$ | $7.426$ | \(\Q(\zeta_{20})\) | None | \(0\) | \(0\) | \(0\) | \(0\) | \(q+(-\zeta_{20}+\zeta_{20}^{3}-\zeta_{20}^{5}+\zeta_{20}^{7})q^{2}+\cdots\) |
930.2.z.b | $16$ | $7.426$ | \(\mathbb{Q}[x]/(x^{16} - \cdots)\) | None | \(0\) | \(0\) | \(12\) | \(0\) | \(q-\beta _{12}q^{2}-\beta _{14}q^{3}-\beta _{15}q^{4}+(1-\beta _{1}+\cdots)q^{5}+\cdots\) |
930.2.z.c | $32$ | $7.426$ | None | \(0\) | \(0\) | \(-16\) | \(0\) | ||
930.2.z.d | $72$ | $7.426$ | None | \(0\) | \(0\) | \(4\) | \(0\) |
Decomposition of \(S_{2}^{\mathrm{old}}(930, [\chi])\) into lower level spaces
\( S_{2}^{\mathrm{old}}(930, [\chi]) \cong \) \(S_{2}^{\mathrm{new}}(155, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(310, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(465, [\chi])\)\(^{\oplus 2}\)