Space of modular forms of level 3891, weight 1, and Character 3891.s

• Label: 3891.1.s
• Level: $3891$
• Weight: $1$
• Character orbit: 3891.s
• Rep. character: $\chi_{3891}(104,\cdot)$
• Character field: $\Q(\zeta_{18})$
• Dimension: $6$
• Newform subspaces: $1$
• Sturm bound: $432$
• Trace bound: $0$

Defining parameters

Level:	\( N \)	\(=\)	\( 3891 = 3 \cdot 1297 \)
Weight:	\( k \)	\(=\)	\( 1 \)
Character orbit:	\([\chi]\)	\(=\)	3891.s (of order \(18\) and degree \(6\))
Character conductor:	\(\operatorname{cond}(\chi)\)	\(=\)	\( 3891 \)
Character field:			\(\Q(\zeta_{18})\)
Newform subspaces:			\( 1 \)
Sturm bound:			\(432\)
Trace bound:			\(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{1}(3891, [\chi])\).

	Total	New	Old
Modular forms	18	18	0
Cusp forms	6	6	0
Eisenstein series	12	12	0

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

	\(D_n\)	\(A_4\)	\(S_4\)	\(A_5\)
Dimension	6	0	0	0

Trace form

\( 6 q - 3 q^{7} + O(q^{10}) \)

Decomposition of \(S_{1}^{\mathrm{new}}(3891, [\chi])\) into newform subspaces

Label	Level	Weight	Char	Prim	Char order	Dim	Rel. Dim	$A$	Field	Image	CM	RM	Self-dual	Twist minimal	Largest	Maximal	Minimal twist	Inner twists	Rank*	Traces				Coefficient ring index	Sato-Tate	$q$-expansion
																				$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$
3891.1.s.a	$3891$	$1$	3891.s	3891.s	$18$	$6$	$1$	$1.942$	\(\Q(\zeta_{18})\)	$D_{9}$	\(\Q(\sqrt{-3}) \)	None		✓	✓	✓	3891.1.s.a	$4$	$0$	\(0\)	\(0\)	\(0\)	\(-3\)	$1$		\(q+\zeta_{18}^{4}q^{3}-\zeta_{18}q^{4}+(\zeta_{18}^{2}-\zeta_{18}^{3}+\cdots)q^{7}+\cdots\)