Space of modular forms of level 192, weight 2, and trivial character

• Label: 192.2.a
• Level: $192$
• Weight: $2$
• Character orbit: 192.a
• Rep. character: $\chi_{192}(1,\cdot)$
• Character field: $\Q$
• Dimension: $4$
• Newform subspaces: $4$
• Sturm bound: $64$
• Trace bound: $5$

Defining parameters

Level:	\( N \)	\(=\)	\( 192 = 2^{6} \cdot 3 \)
Weight:	\( k \)	\(=\)	\( 2 \)
Character orbit:	\([\chi]\)	\(=\)	192.a (trivial)
Character field:			\(\Q\)
Newform subspaces:			\( 4 \)
Sturm bound:			\(64\)
Trace bound:			\(5\)
Distinguishing \(T_p\):			\(5\), \(7\), \(11\)

Dimensions

The following table gives the dimensions of various subspaces of \(M_{2}(\Gamma_0(192))\).

	Total	New	Old
Modular forms	44	4	40
Cusp forms	21	4	17
Eisenstein series	23	0	23

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

\(2\)	\(3\)	Fricke	Dim.
\(+\)	\(+\)	\(+\)	\(1\)
\(+\)	\(-\)	\(-\)	\(2\)
\(-\)	\(+\)	\(-\)	\(1\)
Plus space		\(+\)	\(1\)
Minus space		\(-\)	\(3\)

Trace form

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

Decomposition of \(S_{2}^{\mathrm{new}}(\Gamma_0(192))\) into newform subspaces

Label	Dim.	\(A\)	Field	CM	Traces					A-L signs		$q$-expansion
					\(a_2\)	\(a_3\)	\(a_5\)	\(a_7\)		2	3
192.2.a.a	\(1\)	\(1.533\)	\(\Q\)	None	\(0\)	\(-1\)	\(-2\)	\(-4\)		\(+\)	\(+\)	\(q-q^{3}-2q^{5}-4q^{7}+q^{9}-4q^{11}+\cdots\)
192.2.a.b	\(1\)	\(1.533\)	\(\Q\)	None	\(0\)	\(-1\)	\(2\)	\(0\)		\(-\)	\(+\)	\(q-q^{3}+2q^{5}+q^{9}+4q^{11}+2q^{13}+\cdots\)
192.2.a.c	\(1\)	\(1.533\)	\(\Q\)	None	\(0\)	\(1\)	\(-2\)	\(4\)		\(+\)	\(-\)	\(q+q^{3}-2q^{5}+4q^{7}+q^{9}+4q^{11}+\cdots\)
192.2.a.d	\(1\)	\(1.533\)	\(\Q\)	None	\(0\)	\(1\)	\(2\)	\(0\)		\(+\)	\(-\)	\(q+q^{3}+2q^{5}+q^{9}-4q^{11}+2q^{13}+\cdots\)

Decomposition of \(S_{2}^{\mathrm{old}}(\Gamma_0(192))\) into lower level spaces

\( S_{2}^{\mathrm{old}}(\Gamma_0(192)) \cong \) \(S_{2}^{\mathrm{new}}(\Gamma_0(24))\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(32))\)\(^{\oplus 4}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(48))\)\(^{\oplus 3}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(64))\)\(^{\oplus 2}\)\(\oplus\)\(S_{2}^{\mathrm{new}}(\Gamma_0(96))\)\(^{\oplus 2}\)