Defining parameters
Level: | \( N \) | \(=\) | \( 48 = 2^{4} \cdot 3 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 48.a (trivial) |
Character field: | \(\Q\) | ||
Newform subspaces: | \( 1 \) | ||
Sturm bound: | \(16\) | ||
Trace bound: | \(0\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{2}(\Gamma_0(48))\).
Total | New | Old | |
---|---|---|---|
Modular forms | 14 | 1 | 13 |
Cusp forms | 3 | 1 | 2 |
Eisenstein series | 11 | 0 | 11 |
The following table gives the dimensions of the cuspidal new subspaces with specified eigenvalues for the Atkin-Lehner operators and the Fricke involution.
\(2\) | \(3\) | Fricke | Dim |
---|---|---|---|
\(+\) | \(-\) | \(-\) | \(1\) |
Plus space | \(+\) | \(0\) | |
Minus space | \(-\) | \(1\) |
Trace form
Decomposition of \(S_{2}^{\mathrm{new}}(\Gamma_0(48))\) into newform subspaces
Label | Dim | $A$ | Field | CM | Traces | A-L signs | $q$-expansion | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
$a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | 2 | 3 | |||||||
48.2.a.a | $1$ | $0.383$ | \(\Q\) | None | \(0\) | \(1\) | \(-2\) | \(0\) | $+$ | $-$ | \(q+q^{3}-2q^{5}+q^{9}-4q^{11}-2q^{13}+\cdots\) |
Decomposition of \(S_{2}^{\mathrm{old}}(\Gamma_0(48))\) into lower level spaces
\( S_{2}^{\mathrm{old}}(\Gamma_0(48)) \simeq \) \(S_{2}^{\mathrm{new}}(\Gamma_0(24))\)\(^{\oplus 2}\)