Defining parameters
Level: | \( N \) | \(=\) | \( 387 = 3^{2} \cdot 43 \) |
Weight: | \( k \) | \(=\) | \( 4 \) |
Character orbit: | \([\chi]\) | \(=\) | 387.a (trivial) |
Character field: | \(\Q\) | ||
Newform subspaces: | \( 11 \) | ||
Sturm bound: | \(176\) | ||
Trace bound: | \(4\) | ||
Distinguishing \(T_p\): | \(2\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{4}(\Gamma_0(387))\).
Total | New | Old | |
---|---|---|---|
Modular forms | 136 | 52 | 84 |
Cusp forms | 128 | 52 | 76 |
Eisenstein series | 8 | 0 | 8 |
The following table gives the dimensions of the cuspidal new subspaces with specified eigenvalues for the Atkin-Lehner operators and the Fricke involution.
\(3\) | \(43\) | Fricke | Dim |
---|---|---|---|
\(+\) | \(+\) | $+$ | \(12\) |
\(+\) | \(-\) | $-$ | \(8\) |
\(-\) | \(+\) | $-$ | \(15\) |
\(-\) | \(-\) | $+$ | \(17\) |
Plus space | \(+\) | \(29\) | |
Minus space | \(-\) | \(23\) |
Trace form
Decomposition of \(S_{4}^{\mathrm{new}}(\Gamma_0(387))\) into newform subspaces
Decomposition of \(S_{4}^{\mathrm{old}}(\Gamma_0(387))\) into lower level spaces
\( S_{4}^{\mathrm{old}}(\Gamma_0(387)) \cong \) \(S_{4}^{\mathrm{new}}(\Gamma_0(9))\)\(^{\oplus 2}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_0(43))\)\(^{\oplus 3}\)\(\oplus\)\(S_{4}^{\mathrm{new}}(\Gamma_0(129))\)\(^{\oplus 2}\)