Space of modular forms of level 775, weight 2, and Character 775.r

• Label: 775.2.r
• Level: $775$
• Weight: $2$
• Character orbit: 775.r
• Rep. character: $\chi_{775}(4,\cdot)$
• Character field: $\Q(\zeta_{10})$
• Dimension: $312$
• Newform subspaces: $1$
• Sturm bound: $160$
• Trace bound: $0$

Defining parameters

Level:	\( N \)	\(=\)	\( 775 = 5^{2} \cdot 31 \)
Weight:	\( k \)	\(=\)	\( 2 \)
Character orbit:	\([\chi]\)	\(=\)	775.r (of order \(10\) and degree \(4\))
Character conductor:	\(\operatorname{cond}(\chi)\)	\(=\)	\( 775 \)
Character field:			\(\Q(\zeta_{10})\)
Newform subspaces:			\( 1 \)
Sturm bound:			\(160\)
Trace bound:			\(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(775, [\chi])\).

	Total	New	Old
Modular forms	328	328	0
Cusp forms	312	312	0
Eisenstein series	16	16	0

Trace form

\( 312 q - 310 q^{4} - 10 q^{5} - 8 q^{6} + 72 q^{9} + O(q^{10}) \)

Decomposition of \(S_{2}^{\mathrm{new}}(775, [\chi])\) 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
														$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$
775.2.r.a	$775$	$2$	775.r	775.r	$10$	$312$	$78$	$6.188$		None		$2$	$0$	\(0\)	\(0\)	\(-10\)	\(0\)		$\mathrm{SU}(2)[C_{10}]$