Properties

Label 2025.2.f
Level $2025$
Weight $2$
Character orbit 2025.f
Rep. character $\chi_{2025}(1457,\cdot)$
Character field $\Q(\zeta_{4})$
Dimension $136$
Sturm bound $540$

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Defining parameters

Level: \( N \) \(=\) \( 2025 = 3^{4} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2025.f (of order \(4\) and degree \(2\))
Character conductor: \(\operatorname{cond}(\chi)\) \(=\) \( 15 \)
Character field: \(\Q(i)\)
Sturm bound: \(540\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(2025, [\chi])\).

Total New Old
Modular forms 612 152 460
Cusp forms 468 136 332
Eisenstein series 144 16 128

Trace form

\( 136 q - 4 q^{7} + O(q^{10}) \) \( 136 q - 4 q^{7} - 16 q^{13} - 104 q^{16} - 20 q^{22} + 16 q^{28} + 8 q^{31} - 40 q^{37} + 20 q^{43} - 16 q^{46} + 8 q^{52} + 48 q^{58} + 56 q^{61} + 8 q^{67} - 4 q^{73} - 72 q^{76} + 64 q^{82} - 60 q^{88} + 128 q^{91} + 32 q^{97} + O(q^{100}) \)

Decomposition of \(S_{2}^{\mathrm{new}}(2025, [\chi])\) into newform subspaces

The newforms in this space have not yet been added to the LMFDB.

Decomposition of \(S_{2}^{\mathrm{old}}(2025, [\chi])\) into lower level spaces

\( S_{2}^{\mathrm{old}}(2025, [\chi]) \cong \) \(S_{2}^{\mathrm{new}}(45, [\chi])\)\(^{\oplus 6}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(75, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(135, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(225, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(405, [\chi])\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(675, [\chi])\)\(^{\oplus 2}\)