Space of modular forms of level 12, weight 9, and Character 12.d

• Label: 12.9.d
• Level: $12$
• Weight: $9$
• Character orbit: 12.d
• Rep. character: $\chi_{12}(7,\cdot)$
• Character field: $\Q$
• Dimension: $8$
• Newform subspaces: $1$
• Sturm bound: $18$
• Trace bound: $0$

Defining parameters

Level:	\( N \)	\(=\)	\( 12 = 2^{2} \cdot 3 \)
Weight:	\( k \)	\(=\)	\( 9 \)
Character orbit:	\([\chi]\)	\(=\)	12.d (of order \(2\) and degree \(1\))
Character conductor:	\(\operatorname{cond}(\chi)\)	\(=\)	\( 4 \)
Character field:			\(\Q\)
Newform subspaces:			\( 1 \)
Sturm bound:			\(18\)
Trace bound:			\(0\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{9}(12, [\chi])\).

	Total	New	Old
Modular forms	18	8	10
Cusp forms	14	8	6
Eisenstein series	4	0	4

Trace form

8 * q + 6 * q^2 - 52 * q^4 - 336 * q^5 + 1134 * q^6 - 12960 * q^8 - 17496 * q^9 + 36628 * q^10 - 11340 * q^12 - 2864 * q^13 + 52728 * q^14 + 99440 * q^16 - 193200 * q^17 - 13122 * q^18 + 335592 * q^20 + 121824 * q^21 - 556968 * q^22 + 221616 * q^24 - 579048 * q^25 + 21564 * q^26 - 594672 * q^28 + 2063472 * q^29 + 46980 * q^30 - 3602784 * q^32 - 920160 * q^33 + 1568476 * q^34 + 113724 * q^36 + 7470352 * q^37 + 3659400 * q^38 + 1749184 * q^40 - 8865456 * q^41 - 5288328 * q^42 + 2395920 * q^44 + 734832 * q^45 - 13649856 * q^46 + 10916208 * q^48 - 18923896 * q^49 + 14581842 * q^50 + 18592888 * q^52 + 8706672 * q^53 - 2480058 * q^54 - 45565632 * q^56 - 2325024 * q^57 - 8816444 * q^58 + 28348056 * q^60 + 13457296 * q^61 + 80783976 * q^62 + 1268864 * q^64 + 7293408 * q^65 - 51205608 * q^66 - 117288264 * q^68 - 8636544 * q^69 - 60373104 * q^70 + 28343520 * q^72 + 94738960 * q^73 + 119548428 * q^74 + 144621360 * q^76 - 56971392 * q^77 - 140630580 * q^78 - 163857888 * q^80 + 38263752 * q^81 - 188383460 * q^82 + 199712304 * q^84 - 201200416 * q^85 + 240327384 * q^86 + 156323520 * q^88 + 188992272 * q^89 - 80105436 * q^90 - 387657984 * q^92 - 54802656 * q^93 - 38749872 * q^94 + 246092256 * q^96 - 123291632 * q^97 + 691081830 * q^98

Decomposition of \(S_{9}^{\mathrm{new}}(12, [\chi])\) into newform subspaces

Label	Level	Weight	Char	Prim	Char order	Dim	Rel. Dim	$A$	Field	CM	Self-dual	Twist minimal	Largest	Maximal	Minimal twist	Inner twists	Rank*	Traces				Coefficient ring index	Sato-Tate	$q$-expansion
																		$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$
12.9.d.a	$12$	$9$	12.d	4.b	$2$	$8$	$8$	$4.889$	\(\mathbb{Q}[x]/(x^{8} - \cdots)\)	None		✓	✓	✓	12.9.d.a	$2$	$0$	\(6\)	\(0\)	\(-336\)	\(0\)	$2^{22}\cdot 3^{10}$	$\mathrm{SU}(2)[C_{2}]$	\(q+(1+\beta _{1})q^{2}+(-\beta _{1}-\beta _{3})q^{3}+(-6+\cdots)q^{4}+\cdots\)

Decomposition of \(S_{9}^{\mathrm{old}}(12, [\chi])\) into lower level spaces

\( S_{9}^{\mathrm{old}}(12, [\chi]) \simeq \) \(S_{9}^{\mathrm{new}}(4, [\chi])\)\(^{\oplus 2}\)