Space of modular forms of level 672, weight 1, and Character 672.ba

• Label: 672.1.ba
• Level: $672$
• Weight: $1$
• Character orbit: 672.ba
• Rep. character: $\chi_{672}(305,\cdot)$
• Character field: $\Q(\zeta_{6})$
• Dimension: $4$
• Newform subspaces: $2$
• Sturm bound: $128$
• Trace bound: $3$

Defining parameters

Level:	\( N \)	\(=\)	\( 672 = 2^{5} \cdot 3 \cdot 7 \)
Weight:	\( k \)	\(=\)	\( 1 \)
Character orbit:	\([\chi]\)	\(=\)	672.ba (of order \(6\) and degree \(2\))
Character conductor:	\(\operatorname{cond}(\chi)\)	\(=\)	\( 168 \)
Character field:			\(\Q(\zeta_{6})\)
Newform subspaces:			\( 2 \)
Sturm bound:			\(128\)
Trace bound:			\(3\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{1}(672, [\chi])\).

	Total	New	Old
Modular forms	48	12	36
Cusp forms	16	4	12
Eisenstein series	32	8	24

The following table gives the dimensions of subspaces with specified projective image type.

	\(D_n\)	\(A_4\)	\(S_4\)	\(A_5\)
Dimension	4	0	0	0

Trace form

\( 4 q + 2 q^{7} - 2 q^{9} + O(q^{10}) \)

Decomposition of \(S_{1}^{\mathrm{new}}(672, [\chi])\) into newform subspaces

Label	Level	Weight	Char	Prim	Char order	Dim	Rel. Dim	$A$	Field	Image	CM	RM	Self-dual	Inner twists	Rank*	Traces				Coefficient ring index	Sato-Tate	$q$-expansion
																$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$
672.1.ba.a	$672$	$1$	672.ba	168.s	$6$	$2$	$1$	$0.335$	\(\Q(\sqrt{-3}) \)	$D_{3}$	\(\Q(\sqrt{-6}) \)	None		$4$	$0$	\(0\)	\(-1\)	\(-1\)	\(1\)	$1$		\(q-\zeta_{6}q^{3}+\zeta_{6}^{2}q^{5}+\zeta_{6}q^{7}+\zeta_{6}^{2}q^{9}+\cdots\)
672.1.ba.b	$672$	$1$	672.ba	168.s	$6$	$2$	$1$	$0.335$	\(\Q(\sqrt{-3}) \)	$D_{3}$	\(\Q(\sqrt{-6}) \)	None		$4$	$0$	\(0\)	\(1\)	\(1\)	\(1\)	$1$		\(q+\zeta_{6}q^{3}-\zeta_{6}^{2}q^{5}+\zeta_{6}q^{7}+\zeta_{6}^{2}q^{9}+\cdots\)

Decomposition of \(S_{1}^{\mathrm{old}}(672, [\chi])\) into lower level spaces

\( S_{1}^{\mathrm{old}}(672, [\chi]) \cong \) \(S_{1}^{\mathrm{new}}(168, [\chi])\)\(^{\oplus 3}\)\(\oplus\)\(S_{1}^{\mathrm{new}}(336, [\chi])\)\(^{\oplus 2}\)