Space of modular forms of level 1098, weight 2, and trivial character

• Label: 1098.2.a
• Level: $1098$
• Weight: $2$
• Character orbit: 1098.a
• Rep. character: $\chi_{1098}(1,\cdot)$
• Character field: $\Q$
• Dimension: $25$
• Newform subspaces: $17$
• Sturm bound: $372$
• Trace bound: $7$

Defining parameters

Level:	\( N \)	\(=\)	\( 1098 = 2 \cdot 3^{2} \cdot 61 \)
Weight:	\( k \)	\(=\)	\( 2 \)
Character orbit:	\([\chi]\)	\(=\)	1098.a (trivial)
Character field:			\(\Q\)
Newform subspaces:			\( 17 \)
Sturm bound:			\(372\)
Trace bound:			\(7\)
Distinguishing \(T_p\):			\(5\), \(7\), \(11\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(\Gamma_0(1098))\).

	Total	New	Old
Modular forms	194	25	169
Cusp forms	179	25	154
Eisenstein series	15	0	15

The following table gives the dimensions of the cuspidal new subspaces with specified eigenvalues for the Atkin-Lehner operators and the Fricke involution.

\(2\)	\(3\)	\(61\)	Fricke	Dim
\(+\)	\(+\)	\(+\)	$+$	\(4\)
\(+\)	\(+\)	\(-\)	$-$	\(1\)
\(+\)	\(-\)	\(+\)	$-$	\(4\)
\(+\)	\(-\)	\(-\)	$+$	\(3\)
\(-\)	\(+\)	\(+\)	$-$	\(4\)
\(-\)	\(+\)	\(-\)	$+$	\(1\)
\(-\)	\(-\)	\(+\)	$+$	\(2\)
\(-\)	\(-\)	\(-\)	$-$	\(6\)
Plus space			\(+\)	\(10\)
Minus space			\(-\)	\(15\)

Trace form

\( 25 q + q^{2} + 25 q^{4} + 4 q^{5} + 4 q^{7} + q^{8} + O(q^{10}) \)

Decomposition of \(S_{2}^{\mathrm{new}}(\Gamma_0(1098))\) into newform subspaces

Label	Level	Weight	Char	Prim	Char order	Dim	Rel. Dim	$A$	Field	CM	Self-dual	Inner twists	Rank*	Traces					A-L signs			Fricke sign	Coefficient ring index	Sato-Tate	$q$-expansion
														$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$		2	3	61
1098.2.a.a	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(-1\)	\(0\)	\(-1\)	\(-2\)		$+$	$-$	$-$	$+$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}-q^{5}-2q^{7}-q^{8}+q^{10}+\cdots\)
1098.2.a.b	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(-1\)	\(0\)	\(-1\)	\(1\)		$+$	$-$	$-$	$+$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}-q^{5}+q^{7}-q^{8}+q^{10}+\cdots\)
1098.2.a.c	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$0$	\(-1\)	\(0\)	\(1\)	\(2\)		$+$	$-$	$+$	$-$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}+q^{5}+2q^{7}-q^{8}-q^{10}+\cdots\)
1098.2.a.d	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(-1\)	\(0\)	\(1\)	\(4\)		$+$	$+$	$+$	$+$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}+q^{5}+4q^{7}-q^{8}-q^{10}+\cdots\)
1098.2.a.e	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(-1\)	\(0\)	\(3\)	\(-3\)		$+$	$-$	$-$	$+$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}+3q^{5}-3q^{7}-q^{8}-3q^{10}+\cdots\)
1098.2.a.f	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$0$	\(-1\)	\(0\)	\(3\)	\(0\)		$+$	$+$	$-$	$-$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}+3q^{5}-q^{8}-3q^{10}+2q^{11}+\cdots\)
1098.2.a.g	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(1\)	\(0\)	\(-3\)	\(0\)		$-$	$+$	$-$	$+$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}-3q^{5}+q^{8}-3q^{10}-2q^{11}+\cdots\)
1098.2.a.h	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(1\)	\(0\)	\(-1\)	\(-5\)		$-$	$-$	$+$	$+$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}-q^{5}-5q^{7}+q^{8}-q^{10}+\cdots\)
1098.2.a.i	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$1$	\(1\)	\(0\)	\(-1\)	\(-2\)		$-$	$-$	$+$	$+$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}-q^{5}-2q^{7}+q^{8}-q^{10}+\cdots\)
1098.2.a.j	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$0$	\(1\)	\(0\)	\(-1\)	\(4\)		$-$	$+$	$+$	$-$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}-q^{5}+4q^{7}+q^{8}-q^{10}+\cdots\)
1098.2.a.k	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$0$	\(1\)	\(0\)	\(2\)	\(4\)		$-$	$-$	$-$	$-$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}+2q^{5}+4q^{7}+q^{8}+2q^{10}+\cdots\)
1098.2.a.l	$1098$	$2$	1098.a	1.a	$1$	$1$	$1$	$8.768$	\(\Q\)	None	✓	$1$	$0$	\(1\)	\(0\)	\(3\)	\(-1\)		$-$	$-$	$-$	$-$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}+3q^{5}-q^{7}+q^{8}+3q^{10}+\cdots\)
1098.2.a.m	$1098$	$2$	1098.a	1.a	$1$	$2$	$2$	$8.768$	\(\Q(\sqrt{17}) \)	None	✓	$1$	$0$	\(2\)	\(0\)	\(0\)	\(-3\)		$-$	$-$	$-$	$-$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}+(1-2\beta )q^{5}+(-2+\beta )q^{7}+\cdots\)
1098.2.a.n	$1098$	$2$	1098.a	1.a	$1$	$2$	$2$	$8.768$	\(\Q(\sqrt{13}) \)	None	✓	$1$	$0$	\(2\)	\(0\)	\(0\)	\(5\)		$-$	$-$	$-$	$-$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}+(2+\beta )q^{7}+q^{8}-2\beta q^{11}+\cdots\)
1098.2.a.o	$1098$	$2$	1098.a	1.a	$1$	$3$	$3$	$8.768$	3.3.892.1	None	✓	$1$	$1$	\(-3\)	\(0\)	\(-4\)	\(-2\)		$+$	$+$	$+$	$+$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}+(-1-\beta _{1})q^{5}+(-1+\beta _{1}+\cdots)q^{7}+\cdots\)
1098.2.a.p	$1098$	$2$	1098.a	1.a	$1$	$3$	$3$	$8.768$	3.3.229.1	None	✓	$1$	$0$	\(-3\)	\(0\)	\(-1\)	\(4\)		$+$	$-$	$+$	$-$	$1$	$\mathrm{SU}(2)$	\(q-q^{2}+q^{4}+(\beta _{1}+\beta _{2})q^{5}+(1+2\beta _{1}+\cdots)q^{7}+\cdots\)
1098.2.a.q	$1098$	$2$	1098.a	1.a	$1$	$3$	$3$	$8.768$	3.3.892.1	None	✓	$1$	$0$	\(3\)	\(0\)	\(4\)	\(-2\)		$-$	$+$	$+$	$-$	$1$	$\mathrm{SU}(2)$	\(q+q^{2}+q^{4}+(1+\beta _{1})q^{5}+(-1+\beta _{1}+\cdots)q^{7}+\cdots\)

Decomposition of \(S_{2}^{\mathrm{old}}(\Gamma_0(1098))\) into lower level spaces

\( S_{2}^{\mathrm{old}}(\Gamma_0(1098)) \simeq \) \(S_{2}^{\mathrm{new}}(\Gamma_0(61))\)\(^{\oplus 6}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(122))\)\(^{\oplus 3}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(183))\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(366))\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(549))\)\(^{\oplus 2}\)