LMFDB - Space of modular forms of level 1840, weight 4, and trivial character

Defining parameters

Level:	$ N $	$=$	$ 1840 = 2^{4} \cdot 5 \cdot 23 $
Weight:	$ k $	$=$	$ 4 $
Character orbit:	$[\chi]$	$=$	1840.a (trivial)
Character field:			$\Q$
Newform subspaces:			$ 28 $
Sturm bound:			$1152$
Trace bound:			$7$
Distinguishing $T_p$:			$3$, $7$

Dimensions

The following table gives the dimensions of various subspaces of $M_{4}(\Gamma_0(1840))$.

	Total	New	Old
Modular forms	876	132	744
Cusp forms	852	132	720
Eisenstein series	24	0	24

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

$2$	$5$	$23$	Fricke	Dim.
$+$	$+$	$+$	$+$	$18$
$+$	$+$	$-$	$-$	$15$
$+$	$-$	$+$	$-$	$15$
$+$	$-$	$-$	$+$	$18$
$-$	$+$	$+$	$-$	$18$
$-$	$+$	$-$	$+$	$15$
$-$	$-$	$+$	$+$	$18$
$-$	$-$	$-$	$-$	$15$
Plus space			$+$	$69$
Minus space			$-$	$63$

Trace form

Decomposition of $S_{4}^{\mathrm{new}}(\Gamma_0(1840))$ into newform subspaces

Label	Dim.	$A$	Field	CM	Traces				A-L signs			$q$-expansion
Label	Dim.	$A$	Field	CM	$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$	2	5	23	$q$-expansion
1840.4.a.a	$1$	$108.564$	$\Q$	None	$0$	$-7$	$5$	$-20$	$-$	$-$	$+$	$q-7q^{3}+5q^{5}-20q^{7}+22q^{9}-6q^{11}+\cdots$
1840.4.a.b	$1$	$108.564$	$\Q$	None	$0$	$-4$	$-5$	$-3$	$-$	$+$	$+$	$q-4q^{3}-5q^{5}-3q^{7}-11q^{9}+2q^{11}+\cdots$
1840.4.a.c	$1$	$108.564$	$\Q$	None	$0$	$-4$	$-5$	$32$	$-$	$+$	$+$	$q-4q^{3}-5q^{5}+2^{5}q^{7}-11q^{9}-40q^{11}+\cdots$
1840.4.a.d	$1$	$108.564$	$\Q$	None	$0$	$-1$	$-5$	$18$	$-$	$+$	$-$	$q-q^{3}-5q^{5}+18q^{7}-26q^{9}+2^{5}q^{11}+\cdots$
1840.4.a.e	$1$	$108.564$	$\Q$	None	$0$	$1$	$5$	$32$	$-$	$-$	$+$	$q+q^{3}+5q^{5}+2^{5}q^{7}-26q^{9}+30q^{11}+\cdots$
1840.4.a.f	$1$	$108.564$	$\Q$	None	$0$	$3$	$5$	$2$	$-$	$-$	$-$	$q+3q^{3}+5q^{5}+2q^{7}-18q^{9}+2^{4}q^{11}+\cdots$
1840.4.a.g	$1$	$108.564$	$\Q$	None	$0$	$5$	$-5$	$-12$	$-$	$+$	$+$	$q+5q^{3}-5q^{5}-12q^{7}-2q^{9}-22q^{11}+\cdots$
1840.4.a.h	$2$	$108.564$	$\Q(\sqrt{109}) $	None	$0$	$3$	$10$	$-1$	$-$	$-$	$-$	$q+(1+\beta )q^{3}+5q^{5}+(2-5\beta )q^{7}+(1+\cdots)q^{9}+\cdots$
1840.4.a.i	$2$	$108.564$	$\Q(\sqrt{73}) $	None	$0$	$3$	$10$	$17$	$-$	$-$	$-$	$q+(1+\beta )q^{3}+5q^{5}+(8+\beta )q^{7}+(-8+\cdots)q^{9}+\cdots$
1840.4.a.j	$3$	$108.564$	3.3.318165.1	None	$0$	$1$	$15$	$-7$	$-$	$-$	$+$	$q+\beta _{1}q^{3}+5q^{5}+(-1-3\beta _{1}+\beta _{2})q^{7}+\cdots$
1840.4.a.k	$4$	$108.564$	$\mathbb{Q}[x]/(x^{4} - \cdots)$	None	$0$	$-14$	$20$	$-8$	$-$	$-$	$-$	$q+(-4+\beta _{1})q^{3}+5q^{5}+(-1-\beta _{1}+\cdots)q^{7}+\cdots$
1840.4.a.l	$4$	$108.564$	$\mathbb{Q}[x]/(x^{4} - \cdots)$	None	$0$	$-4$	$-20$	$-26$	$-$	$+$	$+$	$q+(-1+\beta _{1})q^{3}-5q^{5}+(-6+\beta _{1}+\cdots)q^{7}+\cdots$
1840.4.a.m	$4$	$108.564$	$\mathbb{Q}[x]/(x^{4} - \cdots)$	None	$0$	$4$	$-20$	$1$	$-$	$+$	$-$	$q+(1-\beta _{1})q^{3}-5q^{5}+(-2\beta _{1}-\beta _{2}+\cdots)q^{7}+\cdots$
1840.4.a.n	$5$	$108.564$	$\mathbb{Q}[x]/(x^{5} - \cdots)$	None	$0$	$-4$	$-25$	$3$	$-$	$+$	$-$	$q+(-1-\beta _{4})q^{3}-5q^{5}+(-2\beta _{1}+\beta _{4})q^{7}+\cdots$
1840.4.a.o	$5$	$108.564$	$\mathbb{Q}[x]/(x^{5} - \cdots)$	None	$0$	$3$	$-25$	$-8$	$-$	$+$	$-$	$q+(1-\beta _{1})q^{3}-5q^{5}+(-2+\beta _{2}+\beta _{3}+\cdots)q^{7}+\cdots$
1840.4.a.p	$5$	$108.564$	$\mathbb{Q}[x]/(x^{5} - \cdots)$	None	$0$	$6$	$-25$	$15$	$-$	$+$	$+$	$q+(1-\beta _{1}+\beta _{3})q^{3}-5q^{5}+(2+3\beta _{1}+\cdots)q^{7}+\cdots$
1840.4.a.q	$5$	$108.564$	$\mathbb{Q}[x]/(x^{5} - \cdots)$	None	$0$	$7$	$25$	$20$	$-$	$-$	$+$	$q+(1+\beta _{3})q^{3}+5q^{5}+(5+\beta _{1}+2\beta _{2}+\cdots)q^{7}+\cdots$
1840.4.a.r	$6$	$108.564$	$\mathbb{Q}[x]/(x^{6} - \cdots)$	None	$0$	$-3$	$-30$	$-20$	$-$	$+$	$+$	$q+(-1+\beta _{1})q^{3}-5q^{5}+(-3-\beta _{1}+\cdots)q^{7}+\cdots$
1840.4.a.s	$6$	$108.564$	$\mathbb{Q}[x]/(x^{6} - \cdots)$	None	$0$	$-2$	$-30$	$-28$	$+$	$+$	$-$	$q-\beta _{1}q^{3}-5q^{5}+(-5-\beta _{2}-\beta _{4})q^{7}+\cdots$
1840.4.a.t	$6$	$108.564$	$\mathbb{Q}[x]/(x^{6} - \cdots)$	None	$0$	$1$	$30$	$-24$	$-$	$-$	$-$	$q+\beta _{1}q^{3}+5q^{5}+(-4-\beta _{3}+\beta _{4})q^{7}+\cdots$
1840.4.a.u	$6$	$108.564$	$\mathbb{Q}[x]/(x^{6} - \cdots)$	None	$0$	$4$	$30$	$14$	$+$	$-$	$+$	$q+(1-\beta _{1})q^{3}+5q^{5}+(2+\beta _{1}+\beta _{4}+\cdots)q^{7}+\cdots$
1840.4.a.v	$8$	$108.564$	$\mathbb{Q}[x]/(x^{8} - \cdots)$	None	$0$	$0$	$40$	$-11$	$-$	$-$	$+$	$q+\beta _{3}q^{3}+5q^{5}+(-1+\beta _{3}+\beta _{6})q^{7}+\cdots$
1840.4.a.w	$8$	$108.564$	$\mathbb{Q}[x]/(x^{8} - \cdots)$	None	$0$	$6$	$-40$	$3$	$+$	$+$	$+$	$q+(1-\beta _{1})q^{3}-5q^{5}-\beta _{5}q^{7}+(8-\beta _{1}+\cdots)q^{9}+\cdots$
1840.4.a.x	$8$	$108.564$	$\mathbb{Q}[x]/(x^{8} - \cdots)$	None	$0$	$12$	$40$	$31$	$+$	$-$	$-$	$q+(2-\beta _{1})q^{3}+5q^{5}+(3+\beta _{1}+\beta _{3}+\cdots)q^{7}+\cdots$
1840.4.a.y	$9$	$108.564$	$\mathbb{Q}[x]/(x^{9} - \cdots)$	None	$0$	$-3$	$45$	$-25$	$+$	$-$	$+$	$q-\beta _{1}q^{3}+5q^{5}+(-3+\beta _{3})q^{7}+(7+\cdots)q^{9}+\cdots$
1840.4.a.z	$9$	$108.564$	$\mathbb{Q}[x]/(x^{9} - \cdots)$	None	$0$	$3$	$-45$	$-25$	$+$	$+$	$-$	$q+\beta _{1}q^{3}-5q^{5}+(-3+\beta _{3})q^{7}+(6+\cdots)q^{9}+\cdots$
1840.4.a.ba	$10$	$108.564$	$\mathbb{Q}[x]/(x^{10} - \cdots)$	None	$0$	$-5$	$50$	$-14$	$+$	$-$	$-$	$q-\beta _{1}q^{3}+5q^{5}+(-1-\beta _{1}+\beta _{6})q^{7}+\cdots$
1840.4.a.bb	$10$	$108.564$	$\mathbb{Q}[x]/(x^{10} - \cdots)$	None	$0$	$1$	$-50$	$-28$	$+$	$+$	$+$	$q+\beta _{1}q^{3}-5q^{5}+(-3-\beta _{1}-\beta _{6})q^{7}+\cdots$

Decomposition of $S_{4}^{\mathrm{old}}(\Gamma_0(1840))$ into lower level spaces

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Level:	\( N \)	\(=\)	\( 1840 = 2^{4} \cdot 5 \cdot 23 \)
Weight:	\( k \)	\(=\)	\( 4 \)
Character orbit:	\([\chi]\)	\(=\)	1840.a (trivial)
Character field:			\(\Q\)
Newform subspaces:			\( 28 \)
Sturm bound:			\(1152\)
Trace bound:			\(7\)
Distinguishing \(T_p\):			\(3\), \(7\)

\(2\)	\(5\)	\(23\)	Fricke	Dim.
\(+\)	\(+\)	\(+\)	\(+\)	\(18\)
\(+\)	\(+\)	\(-\)	\(-\)	\(15\)
\(+\)	\(-\)	\(+\)	\(-\)	\(15\)
\(+\)	\(-\)	\(-\)	\(+\)	\(18\)
\(-\)	\(+\)	\(+\)	\(-\)	\(18\)
\(-\)	\(+\)	\(-\)	\(+\)	\(15\)
\(-\)	\(-\)	\(+\)	\(+\)	\(18\)
\(-\)	\(-\)	\(-\)	\(-\)	\(15\)
Plus space			\(+\)	\(69\)
Minus space			\(-\)	\(63\)

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Defining parameters

Dimensions

Trace form

Decomposition of \(S_{4}^{\mathrm{new}}(\Gamma_0(1840))\) into newform subspaces

Decomposition of \(S_{4}^{\mathrm{old}}(\Gamma_0(1840))\) into lower level spaces

This project is supported by grants from the US National Science Foundation, the UK Engineering and Physical Sciences Research Council, and the Simons Foundation.

Label	1840.4.a

Level	$1840$
Weight	$4$
Character orbit	1840.a
Rep. character	$\chi_{1840}(1,\cdot)$
Character field	$\Q$
Dimension	$132$
Newform subspaces	$28$
Sturm bound	$1152$
Trace bound	$7$

Label	Dim.	\(A\)	Field	CM	Traces				A-L signs			$q$-expansion
Label	Dim.	\(A\)	Field	CM	$a_{2}$	$a_{3}$	$a_{5}$	$a_{7}$	2	5	23	$q$-expansion
1840.4.a.a	$1$	$108.564$	\(\Q\)	None	\(0\)	\(-7\)	\(5\)	\(-20\)	$-$	$-$	$+$	\(q-7q^{3}+5q^{5}-20q^{7}+22q^{9}-6q^{11}+\cdots\)
1840.4.a.b	$1$	$108.564$	\(\Q\)	None	\(0\)	\(-4\)	\(-5\)	\(-3\)	$-$	$+$	$+$	\(q-4q^{3}-5q^{5}-3q^{7}-11q^{9}+2q^{11}+\cdots\)
1840.4.a.c	$1$	$108.564$	\(\Q\)	None	\(0\)	\(-4\)	\(-5\)	\(32\)	$-$	$+$	$+$	\(q-4q^{3}-5q^{5}+2^{5}q^{7}-11q^{9}-40q^{11}+\cdots\)
1840.4.a.d	$1$	$108.564$	\(\Q\)	None	\(0\)	\(-1\)	\(-5\)	\(18\)	$-$	$+$	$-$	\(q-q^{3}-5q^{5}+18q^{7}-26q^{9}+2^{5}q^{11}+\cdots\)
1840.4.a.e	$1$	$108.564$	\(\Q\)	None	\(0\)	\(1\)	\(5\)	\(32\)	$-$	$-$	$+$	\(q+q^{3}+5q^{5}+2^{5}q^{7}-26q^{9}+30q^{11}+\cdots\)
1840.4.a.f	$1$	$108.564$	\(\Q\)	None	\(0\)	\(3\)	\(5\)	\(2\)	$-$	$-$	$-$	\(q+3q^{3}+5q^{5}+2q^{7}-18q^{9}+2^{4}q^{11}+\cdots\)
1840.4.a.g	$1$	$108.564$	\(\Q\)	None	\(0\)	\(5\)	\(-5\)	\(-12\)	$-$	$+$	$+$	\(q+5q^{3}-5q^{5}-12q^{7}-2q^{9}-22q^{11}+\cdots\)
1840.4.a.h	$2$	$108.564$	\(\Q(\sqrt{109}) \)	None	\(0\)	\(3\)	\(10\)	\(-1\)	$-$	$-$	$-$	\(q+(1+\beta )q^{3}+5q^{5}+(2-5\beta )q^{7}+(1+\cdots)q^{9}+\cdots\)
1840.4.a.i	$2$	$108.564$	\(\Q(\sqrt{73}) \)	None	\(0\)	\(3\)	\(10\)	\(17\)	$-$	$-$	$-$	\(q+(1+\beta )q^{3}+5q^{5}+(8+\beta )q^{7}+(-8+\cdots)q^{9}+\cdots\)
1840.4.a.j	$3$	$108.564$	3.3.318165.1	None	\(0\)	\(1\)	\(15\)	\(-7\)	$-$	$-$	$+$	\(q+\beta _{1}q^{3}+5q^{5}+(-1-3\beta _{1}+\beta _{2})q^{7}+\cdots\)
1840.4.a.k	$4$	$108.564$	\(\mathbb{Q}[x]/(x^{4} - \cdots)\)	None	\(0\)	\(-14\)	\(20\)	\(-8\)	$-$	$-$	$-$	\(q+(-4+\beta _{1})q^{3}+5q^{5}+(-1-\beta _{1}+\cdots)q^{7}+\cdots\)
1840.4.a.l	$4$	$108.564$	\(\mathbb{Q}[x]/(x^{4} - \cdots)\)	None	\(0\)	\(-4\)	\(-20\)	\(-26\)	$-$	$+$	$+$	\(q+(-1+\beta _{1})q^{3}-5q^{5}+(-6+\beta _{1}+\cdots)q^{7}+\cdots\)
1840.4.a.m	$4$	$108.564$	\(\mathbb{Q}[x]/(x^{4} - \cdots)\)	None	\(0\)	\(4\)	\(-20\)	\(1\)	$-$	$+$	$-$	\(q+(1-\beta _{1})q^{3}-5q^{5}+(-2\beta _{1}-\beta _{2}+\cdots)q^{7}+\cdots\)
1840.4.a.n	$5$	$108.564$	\(\mathbb{Q}[x]/(x^{5} - \cdots)\)	None	\(0\)	\(-4\)	\(-25\)	\(3\)	$-$	$+$	$-$	\(q+(-1-\beta _{4})q^{3}-5q^{5}+(-2\beta _{1}+\beta _{4})q^{7}+\cdots\)
1840.4.a.o	$5$	$108.564$	\(\mathbb{Q}[x]/(x^{5} - \cdots)\)	None	\(0\)	\(3\)	\(-25\)	\(-8\)	$-$	$+$	$-$	\(q+(1-\beta _{1})q^{3}-5q^{5}+(-2+\beta _{2}+\beta _{3}+\cdots)q^{7}+\cdots\)
1840.4.a.p	$5$	$108.564$	\(\mathbb{Q}[x]/(x^{5} - \cdots)\)	None	\(0\)	\(6\)	\(-25\)	\(15\)	$-$	$+$	$+$	\(q+(1-\beta _{1}+\beta _{3})q^{3}-5q^{5}+(2+3\beta _{1}+\cdots)q^{7}+\cdots\)
1840.4.a.q	$5$	$108.564$	\(\mathbb{Q}[x]/(x^{5} - \cdots)\)	None	\(0\)	\(7\)	\(25\)	\(20\)	$-$	$-$	$+$	\(q+(1+\beta _{3})q^{3}+5q^{5}+(5+\beta _{1}+2\beta _{2}+\cdots)q^{7}+\cdots\)
1840.4.a.r	$6$	$108.564$	\(\mathbb{Q}[x]/(x^{6} - \cdots)\)	None	\(0\)	\(-3\)	\(-30\)	\(-20\)	$-$	$+$	$+$	\(q+(-1+\beta _{1})q^{3}-5q^{5}+(-3-\beta _{1}+\cdots)q^{7}+\cdots\)
1840.4.a.s	$6$	$108.564$	\(\mathbb{Q}[x]/(x^{6} - \cdots)\)	None	\(0\)	\(-2\)	\(-30\)	\(-28\)	$+$	$+$	$-$	\(q-\beta _{1}q^{3}-5q^{5}+(-5-\beta _{2}-\beta _{4})q^{7}+\cdots\)
1840.4.a.t	$6$	$108.564$	\(\mathbb{Q}[x]/(x^{6} - \cdots)\)	None	\(0\)	\(1\)	\(30\)	\(-24\)	$-$	$-$	$-$	\(q+\beta _{1}q^{3}+5q^{5}+(-4-\beta _{3}+\beta _{4})q^{7}+\cdots\)
1840.4.a.u	$6$	$108.564$	\(\mathbb{Q}[x]/(x^{6} - \cdots)\)	None	\(0\)	\(4\)	\(30\)	\(14\)	$+$	$-$	$+$	\(q+(1-\beta _{1})q^{3}+5q^{5}+(2+\beta _{1}+\beta _{4}+\cdots)q^{7}+\cdots\)
1840.4.a.v	$8$	$108.564$	\(\mathbb{Q}[x]/(x^{8} - \cdots)\)	None	\(0\)	\(0\)	\(40\)	\(-11\)	$-$	$-$	$+$	\(q+\beta _{3}q^{3}+5q^{5}+(-1+\beta _{3}+\beta _{6})q^{7}+\cdots\)
1840.4.a.w	$8$	$108.564$	\(\mathbb{Q}[x]/(x^{8} - \cdots)\)	None	\(0\)	\(6\)	\(-40\)	\(3\)	$+$	$+$	$+$	\(q+(1-\beta _{1})q^{3}-5q^{5}-\beta _{5}q^{7}+(8-\beta _{1}+\cdots)q^{9}+\cdots\)
1840.4.a.x	$8$	$108.564$	\(\mathbb{Q}[x]/(x^{8} - \cdots)\)	None	\(0\)	\(12\)	\(40\)	\(31\)	$+$	$-$	$-$	\(q+(2-\beta _{1})q^{3}+5q^{5}+(3+\beta _{1}+\beta _{3}+\cdots)q^{7}+\cdots\)
1840.4.a.y	$9$	$108.564$	\(\mathbb{Q}[x]/(x^{9} - \cdots)\)	None	\(0\)	\(-3\)	\(45\)	\(-25\)	$+$	$-$	$+$	\(q-\beta _{1}q^{3}+5q^{5}+(-3+\beta _{3})q^{7}+(7+\cdots)q^{9}+\cdots\)
1840.4.a.z	$9$	$108.564$	\(\mathbb{Q}[x]/(x^{9} - \cdots)\)	None	\(0\)	\(3\)	\(-45\)	\(-25\)	$+$	$+$	$-$	\(q+\beta _{1}q^{3}-5q^{5}+(-3+\beta _{3})q^{7}+(6+\cdots)q^{9}+\cdots\)
1840.4.a.ba	$10$	$108.564$	\(\mathbb{Q}[x]/(x^{10} - \cdots)\)	None	\(0\)	\(-5\)	\(50\)	\(-14\)	$+$	$-$	$-$	\(q-\beta _{1}q^{3}+5q^{5}+(-1-\beta _{1}+\beta _{6})q^{7}+\cdots\)
1840.4.a.bb	$10$	$108.564$	\(\mathbb{Q}[x]/(x^{10} - \cdots)\)	None	\(0\)	\(1\)	\(-50\)	\(-28\)	$+$	$+$	$+$	\(q+\beta _{1}q^{3}-5q^{5}+(-3-\beta _{1}-\beta _{6})q^{7}+\cdots\)