Defining parameters
Level: | \( N \) | \(=\) | \( 121 = 11^{2} \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 121.a (trivial) |
Character field: | \(\Q\) | ||
Newform subspaces: | \( 4 \) | ||
Sturm bound: | \(22\) | ||
Trace bound: | \(2\) | ||
Distinguishing \(T_p\): | \(2\) |
Dimensions
The following table gives the dimensions of various subspaces of \(M_{2}(\Gamma_0(121))\).
Total | New | Old | |
---|---|---|---|
Modular forms | 17 | 13 | 4 |
Cusp forms | 6 | 4 | 2 |
Eisenstein series | 11 | 9 | 2 |
The following table gives the dimensions of the cuspidal new subspaces with specified eigenvalues for the Atkin-Lehner operators and the Fricke involution.
\(11\) | Dim |
---|---|
\(+\) | \(1\) |
\(-\) | \(3\) |
Trace form
Decomposition of \(S_{2}^{\mathrm{new}}(\Gamma_0(121))\) into newform subspaces
Label | Dim | $A$ | Field | CM | Traces | A-L signs | $q$-expansion | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
$a_{2}$ | $a_{3}$ | $a_{5}$ | $a_{7}$ | 11 | |||||||
121.2.a.a | $1$ | $0.966$ | \(\Q\) | None | \(-1\) | \(2\) | \(1\) | \(2\) | $-$ | \(q-q^{2}+2q^{3}-q^{4}+q^{5}-2q^{6}+2q^{7}+\cdots\) | |
121.2.a.b | $1$ | $0.966$ | \(\Q\) | \(\Q(\sqrt{-11}) \) | \(0\) | \(-1\) | \(-3\) | \(0\) | $+$ | \(q-q^{3}-2q^{4}-3q^{5}-2q^{9}+2q^{12}+\cdots\) | |
121.2.a.c | $1$ | $0.966$ | \(\Q\) | None | \(1\) | \(2\) | \(1\) | \(-2\) | $-$ | \(q+q^{2}+2q^{3}-q^{4}+q^{5}+2q^{6}-2q^{7}+\cdots\) | |
121.2.a.d | $1$ | $0.966$ | \(\Q\) | None | \(2\) | \(-1\) | \(1\) | \(2\) | $-$ | \(q+2q^{2}-q^{3}+2q^{4}+q^{5}-2q^{6}+2q^{7}+\cdots\) |
Decomposition of \(S_{2}^{\mathrm{old}}(\Gamma_0(121))\) into lower level spaces
\( S_{2}^{\mathrm{old}}(\Gamma_0(121)) \cong \) \(S_{2}^{\mathrm{new}}(\Gamma_0(11))\)\(^{\oplus 2}\)