Space of modular forms of level 2000, weight 1, and Character 2000.b

• Label: 2000.1.b
• Level: $2000$
• Weight: $1$
• Character orbit: 2000.b
• Rep. character: $\chi_{2000}(751,\cdot)$
• Character field: $\Q$
• Dimension: $4$
• Newform subspaces: $1$
• Sturm bound: $300$
• Trace bound: $0$

Defining parameters

Level:	\( N \)	\(=\)	\( 2000 = 2^{4} \cdot 5^{3} \)
Weight:	\( k \)	\(=\)	\( 1 \)
Character orbit:	\([\chi]\)	\(=\)	2000.b (of order \(2\) and degree \(1\))
Character conductor:	\(\operatorname{cond}(\chi)\)	\(=\)	\( 4 \)
Character field:			\(\Q\)
Newform subspaces:			\( 1 \)
Sturm bound:			\(300\)
Trace bound:			\(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{1}(2000, [\chi])\).

	Total	New	Old
Modular forms	48	4	44
Cusp forms	18	4	14
Eisenstein series	30	0	30

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

\( 4 q - 6 q^{9} + O(q^{10}) \)

Decomposition of \(S_{1}^{\mathrm{new}}(2000, [\chi])\) 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
																$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$
2000.1.b.a	$2000$	$1$	2000.b	4.b	$2$	$4$	$4$	$0.998$	\(\Q(\zeta_{10})\)	$D_{10}$	\(\Q(\sqrt{-5}) \)	None		$4$	$0$	\(0\)	\(0\)	\(0\)	\(0\)	$2^{2}$		\(q+(\zeta_{10}+\zeta_{10}^{4})q^{3}+(-\zeta_{10}^{2}-\zeta_{10}^{3}+\cdots)q^{7}+\cdots\)

Decomposition of \(S_{1}^{\mathrm{old}}(2000, [\chi])\) into lower level spaces

\( S_{1}^{\mathrm{old}}(2000, [\chi]) \cong \)