Properties

Label 1936.2.e
Level $1936$
Weight $2$
Character orbit 1936.e
Rep. character $\chi_{1936}(1935,\cdot)$
Character field $\Q$
Dimension $54$
Newform subspaces $7$
Sturm bound $528$
Trace bound $5$

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Defining parameters

Level: \( N \) \(=\) \( 1936 = 2^{4} \cdot 11^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1936.e (of order \(2\) and degree \(1\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 44 \)
Character field: \(\Q\)
Newform subspaces: \( 7 \)
Sturm bound: \(528\)
Trace bound: \(5\)
Distinguishing \(T_p\): \(3\), \(5\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(1936, [\chi])\).

Total New Old
Modular forms 300 54 246
Cusp forms 228 54 174
Eisenstein series 72 0 72

Trace form

\( 54 q - 42 q^{9} + O(q^{10}) \) \( 54 q - 42 q^{9} + 30 q^{25} + 24 q^{45} + 102 q^{49} - 48 q^{53} + 72 q^{69} + 6 q^{81} - 12 q^{89} - 72 q^{93} + 12 q^{97} + O(q^{100}) \)

Decomposition of \(S_{2}^{\mathrm{new}}(1936, [\chi])\) into newform subspaces

Label Char Prim Dim $A$ Field CM Minimal twist Traces Sato-Tate $q$-expansion
$a_{2}$ $a_{3}$ $a_{5}$ $a_{7}$
1936.2.e.a 1936.e 44.c $2$ $15.459$ \(\Q(\sqrt{-2}) \) \(\Q(\sqrt{-1}) \) 1936.2.e.a \(0\) \(0\) \(8\) \(0\) $\mathrm{U}(1)[D_{2}]$ \(q+4q^{5}+3q^{9}+5\beta q^{13}-3\beta q^{17}+\cdots\)
1936.2.e.b 1936.e 44.c $4$ $15.459$ \(\Q(\sqrt{-2}, \sqrt{-7})\) None 1936.2.e.b \(0\) \(0\) \(-12\) \(0\) $\mathrm{SU}(2)[C_{2}]$ \(q+\beta _{3}q^{3}-3q^{5}-\beta _{1}q^{7}-4q^{9}-2\beta _{2}q^{13}+\cdots\)
1936.2.e.c 1936.e 44.c $4$ $15.459$ \(\Q(\sqrt{-2}, \sqrt{3})\) \(\Q(\sqrt{-1}) \) 1936.2.e.c \(0\) \(0\) \(-8\) \(0\) $\mathrm{U}(1)[D_{2}]$ \(q+(-2+\beta _{1})q^{5}+3q^{9}+\beta _{2}q^{13}+(-\beta _{2}+\cdots)q^{17}+\cdots\)
1936.2.e.d 1936.e 44.c $4$ $15.459$ \(\Q(\sqrt{-2}, \sqrt{-3})\) None 1936.2.e.d \(0\) \(0\) \(4\) \(0\) $\mathrm{SU}(2)[C_{2}]$ \(q-\beta _{2}q^{3}+q^{5}-\beta _{3}q^{7}+4\beta _{1}q^{13}+\cdots\)
1936.2.e.e 1936.e 44.c $8$ $15.459$ 8.0.484000000.6 None 176.2.q.a \(0\) \(0\) \(4\) \(0\) $\mathrm{SU}(2)[C_{2}]$ \(q+\beta _{1}q^{3}+\beta _{5}q^{5}+(-\beta _{2}-\beta _{3})q^{7}+\cdots\)
1936.2.e.f 1936.e 44.c $16$ $15.459$ 16.0.\(\cdots\).1 None 176.2.q.b \(0\) \(0\) \(-4\) \(0\) $\mathrm{SU}(2)[C_{2}]$ \(q+(\beta _{4}-\beta _{13})q^{3}+(\beta _{5}+\beta _{12})q^{5}+(\beta _{1}+\cdots)q^{7}+\cdots\)
1936.2.e.g 1936.e 44.c $16$ $15.459$ \(\mathbb{Q}[x]/(x^{16} - \cdots)\) None 1936.2.e.g \(0\) \(0\) \(8\) \(0\) $\mathrm{SU}(2)[C_{2}]$ \(q-\beta _{6}q^{3}+(-\beta _{1}-\beta _{2})q^{5}-\beta _{11}q^{7}+\cdots\)

Decomposition of \(S_{2}^{\mathrm{old}}(1936, [\chi])\) into lower level spaces

\( S_{2}^{\mathrm{old}}(1936, [\chi]) \simeq \) \(S_{2}^{\mathrm{new}}(44, [\chi])\)\(^{\oplus 6}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(88, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(176, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(484, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(968, [\chi])\)\(^{\oplus 2}\)