Space of modular forms of level 20, weight 1, and trivial character

• Label: 20.1.a
• Level: $20$
• Weight: $1$
• Character orbit: 20.a
• Rep. character: $\chi_{20}(1,\cdot)$
• Character field: $\Q$
• Dimension: $0$
• Newform subspaces: $0$
• Sturm bound: $3$
• Trace bound: $0$

Defining parameters

Level:	\( N \)	\(=\)	\( 20 = 2^{2} \cdot 5 \)
Weight:	\( k \)	\(=\)	\( 1 \)
Character orbit:	\([\chi]\)	\(=\)	20.a (trivial)
Character field:			\(\Q\)
Newform subspaces:			\( 0 \)
Sturm bound:			\(3\)
Trace bound:			\(0\)

Dimensions

There are no modular forms of weight 1 and character 20.a since the weight is odd while the character is even.