Space of modular forms of level 768, weight 2, and Character 768.o

• Label: 768.2.o
• Level: $768$
• Weight: $2$
• Character orbit: 768.o
• Rep. character: $\chi_{768}(95,\cdot)$
• Character field: $\Q(\zeta_{8})$
• Dimension: $112$
• Newform subspaces: $2$
• Sturm bound: $256$
• Trace bound: $3$

Defining parameters

Level:	\( N \)	\(=\)	\( 768 = 2^{8} \cdot 3 \)
Weight:	\( k \)	\(=\)	\( 2 \)
Character orbit:	\([\chi]\)	\(=\)	768.o (of order \(8\) and degree \(4\))
Character conductor:	\(\operatorname{cond}(\chi)\)	\(=\)	\( 96 \)
Character field:			\(\Q(\zeta_{8})\)
Newform subspaces:			\( 2 \)
Sturm bound:			\(256\)
Trace bound:			\(3\)
Distinguishing \(T_p\):			\(7\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(768, [\chi])\).

	Total	New	Old
Modular forms	576	144	432
Cusp forms	448	112	336
Eisenstein series	128	32	96

Trace form

\( 112 q - 8 q^{9} + O(q^{10}) \)

Decomposition of \(S_{2}^{\mathrm{new}}(768, [\chi])\) into newform subspaces

Label	Level	Weight	Char	Prim	Char order	Dim	Rel. Dim	$A$	Field	CM	Self-dual	Inner twists	Rank*	Traces				Coefficient ring index	Sato-Tate	$q$-expansion
														$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$
768.2.o.a	$768$	$2$	768.o	96.o	$8$	$56$	$14$	$6.133$		None		$4$	$0$	\(0\)	\(-4\)	\(0\)	\(8\)		$\mathrm{SU}(2)[C_{8}]$
768.2.o.b	$768$	$2$	768.o	96.o	$8$	$56$	$14$	$6.133$		None		$4$	$0$	\(0\)	\(4\)	\(0\)	\(-8\)		$\mathrm{SU}(2)[C_{8}]$

Decomposition of \(S_{2}^{\mathrm{old}}(768, [\chi])\) into lower level spaces

\( S_{2}^{\mathrm{old}}(768, [\chi]) \cong \) \(S_{2}^{\mathrm{new}}(96, [\chi])\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(192, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(384, [\chi])\)\(^{\oplus 2}\)