LMFDB - Newform orbit 873.1.br.a

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [873,1,Mod(19,873)]

mf = mfinit([N,k,chi],0)

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(873, base_ring=CyclotomicField(32))

chi = DirichletCharacter(H, H._module([0, 27]))

N = Newforms(chi, 1, names="a")

//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code

chi := DirichletCharacter("873.19");

S:= CuspForms(chi, 1);

N := Newforms(S);

Level:	$N$	$=$	$873 = 3^{2} \cdot 97$
Weight:	$k$	$=$	$1$
Character orbit:	$[\chi]$	$=$	873.br (of order $32$ , degree $16$ , minimal)

Newform invariants

comment: select newform

sage: f = N[0] # Warning: the index may be different

gp: f = lf[1] \\ Warning: the index may be different

Self dual:	no
Analytic conductor:	$0.435683756029$
Analytic rank:	$0$
Dimension:	$16$
Coefficient field:	$\Q(\zeta_{32})$
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$x^{16} + 1$ x^16 + 1
Coefficient ring:	$\Z[a_1, \ldots, a_{7}]$
Coefficient ring index:	$1$
Twist minimal:	yes
Projective image:	$D_{32}$
Projective field:	Galois closure of $\mathbb{Q}[x]/(x^{32} - \cdots)$

$q$ -expansion

comment: q-expansion

sage: f.q_expansion() # note that sage often uses an isomorphic number field

gp: mfcoefs(f, 20)

The $q$ -expansion and trace form are shown below.

$f(q)$	$=$	$q + \zeta_{32}^{6} q^{4} + (\zeta_{32}^{4} + \zeta_{32}) q^{7} + (\zeta_{32}^{14} - \zeta_{32}^{5}) q^{13} + \zeta_{32}^{12} q^{16} + ( - \zeta_{32}^{8} - \zeta_{32}^{3}) q^{19} + \zeta_{32}^{11} q^{25}+ \cdots - \zeta_{32}^{11} q^{97} +O(q^{100})$ q + z^6 * q^4 + (z^4 + z) * q^7 + (z^14 - z^5) * q^13 + z^12 * q^16 + (-z^8 - z^3) * q^19 + z^11 * q^25 + (z^10 + z^7) * q^28 + (-z^7 + z^3) * q^31 + (-z^13 - z^12) * q^37 + (-z^15 + z^13) * q^43 + (z^8 + z^5 + z^2) * q^49 + (-z^11 - z^4) * q^52 + (z^15 - z) * q^61 - z^2 * q^64 + (-z^10 + z^9) * q^67 + (-z^14 - z^6) * q^73 + (-z^14 - z^9) * q^76 + (-z^10 - 1) * q^79 + (z^15 - z^9 - z^6 - z^2) * q^91 - z^11 * q^97
$\operatorname{Tr}(f)(q)$	$=$	$16 q - 16 q^{79}+O(q^{100})$ 16 * q - 16 * q^79

Character values

We give the values of $\chi$ on generators for $\left(\mathbb{Z}/873\mathbb{Z}\right)^\times$ .

$n$	$199$	$389$
$\chi(n)$	$-\zeta_{32}^{11}$	$1$

Embeddings

For each embedding $\iota_m$ of the coefficient field, the values $\iota_m(a_n)$ are shown below.

For more information on an embedded modular form you can click on its label.

comment: embeddings in the coefficient field

gp: mfembed(f)

Label

\iota_m(\nu)

a_{2}

a_{3}

a_{4}

a_{5}

a_{6}

a_{7}

a_{8}

a_{9}

a_{10}

19.1

0.980785	+	0.195090i
−0.831470	−	0.555570i
0.980785	−	0.195090i
0.195090	+	0.980785i
0.195090	−	0.980785i
0.555570	+	0.831470i
−0.555570	+	0.831470i
−0.831470	+	0.555570i
0.831470	−	0.555570i
0.555570	−	0.831470i
−0.555570	−	0.831470i
−0.195090	+	0.980785i
−0.195090	−	0.980785i
−0.980785	+	0.195090i
0.831470	+	0.555570i
−0.980785	−	0.195090i

0.382683

0.923880i

1.68789

0.902197i

28.1

−0.923880

−

0.382683i

−1.53858

0.151537i

46.1

0.382683

−

0.923880i

1.68789

−

0.902197i

55.1

−0.382683

0.923880i

0.902197

0.273678i

127.1

−0.382683

−

0.923880i

0.902197

−

0.273678i

271.1

0.923880

−

0.382683i

−0.151537

0.124363i

325.1

0.923880

0.382683i

−1.26268

1.53858i

343.1

−0.923880

0.382683i

−1.53858

−

0.151537i

433.1

−0.923880

0.382683i

0.124363

−

1.26268i

451.1

0.923880

0.382683i

−0.151537

−

0.124363i

505.1

0.923880

−

0.382683i

−1.26268

−

1.53858i

649.1

−0.382683

−

0.923880i

0.512016

1.68789i

721.1

−0.382683

0.923880i

0.512016

−

1.68789i

730.1

0.382683

−

0.923880i

−0.273678

−

0.512016i

748.1

−0.923880

−

0.382683i

0.124363

1.26268i

757.1

0.382683

0.923880i

−0.273678

0.512016i

Inner twists

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
3.b	odd	2	1	CM by $\Q(\sqrt{-3})$
97.j	odd	32	1	inner
291.s	even	32	1	inner

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	873.1.br.a	✓	16
3.b	odd	2	1	CM	873.1.br.a	✓	16
97.j	odd	32	1	inner	873.1.br.a	✓	16
291.s	even	32	1	inner	873.1.br.a	✓	16

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
873.1.br.a	✓	16	1.a	even	1	1	trivial
873.1.br.a	✓	16	3.b	odd	2	1	CM
873.1.br.a	✓	16	97.j	odd	32	1	inner
873.1.br.a	✓	16	291.s	even	32	1	inner

Hecke kernels

This newform subspace is the entire newspace $S_{1}^{\mathrm{new}}(873, [\chi])$ .

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$T^{16}$ T^16
$3$	$T^{16}$ T^16
$5$	$T^{16}$ T^16
$7$	$T^{16} + 4 T^{12} + \cdots + 2$ T^16 + 4T^12 + 80T^9 + 6T^8 + 72T^6 - 160T^5 + 4T^4 + 16T^3 + 56T^2 + 16*T + 2
$11$	$T^{16}$ T^16
$13$	$T^{16} + 40 T^{10} + \cdots + 2$ T^16 + 40T^10 + 48T^9 + 2T^8 - 16T^5 + 140T^4 - 192T^3 + 88T^2 - 16T + 2
$17$	$T^{16}$ T^16
$19$	$T^{16} + 8 T^{14} + \cdots + 2$ T^16 + 8T^14 + 28T^12 + 56T^10 + 70T^8 + 16T^7 + 56T^6 - 112T^5 + 28T^4 + 112T^3 + 8T^2 - 16*T + 2
$23$	$T^{16}$ T^16
$29$	$T^{16}$ T^16
$31$	$T^{16} - 16 T^{12} + \cdots + 16$ T^16 - 16T^12 + 128T^8 + 64*T^4 + 16
$37$	$T^{16} + 4 T^{12} + \cdots + 2$ T^16 + 4T^12 + 16T^11 + 6T^8 - 160T^7 + 56T^6 + 4T^4 + 80T^3 + 72T^2 + 16*T + 2
$41$	$T^{16}$ T^16
$43$	$T^{16} - 16 T^{10} + \cdots + 4$ T^16 - 16T^10 + 140T^8 - 192T^6 + 128T^4 + 32*T^2 + 4
$47$	$T^{16}$ T^16
$53$	$T^{16}$ T^16
$59$	$T^{16}$ T^16
$61$	$(T^{8} - 8 T^{6} + 20 T^{4} + \cdots + 2)^{2}$ (T^8 - 8T^6 + 20T^4 - 16*T^2 + 2)^2
$67$	$T^{16} - 32 T^{11} + \cdots + 2$ T^16 - 32T^11 + 16T^9 + 2T^8 + 176T^6 + 148T^4 + 32T^3 + 24T^2 - 16T + 2
$71$	$T^{16}$ T^16
$73$	$(T^{8} + 16)^{2}$ (T^8 + 16)^2
$79$	$(T^{8} + 8 T^{7} + 28 T^{6} + \cdots + 2)^{2}$ (T^8 + 8T^7 + 28T^6 + 56T^5 + 70T^4 + 56T^3 + 28T^2 + 8*T + 2)^2
$83$	$T^{16}$ T^16
$89$	$T^{16}$ T^16
$97$	$T^{16} + 1$ T^16 + 1
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Elliptic curves over $\Q$
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$n$ :		e.g. 2-40 or 990-1000
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Database

Properties

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Newspace parameters

Newform invariants

$q$ -expansion

Character values

Embeddings

Inner twists

Twists

Hecke kernels

Hecke characteristic polynomials

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	873.1.br.a

Level	$873$
Weight	$1$
Character orbit	873.br
Analytic conductor	$0.436$
Analytic rank	$0$
Dimension	$16$
Projective image	$D_{32}$
CM discriminant	-3
Inner twists	$4$