LMFDB - Newform orbit 250.2.d.c

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [250,2,Mod(51,250)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(250, base_ring=CyclotomicField(10))

chi = DirichletCharacter(H, H._module([8]))

N = Newforms(chi, 2, names="a")

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

chi := DirichletCharacter("250.51");

S:= CuspForms(chi, 2);

N := Newforms(S);

Level:	$N$	$=$	$250 = 2 \cdot 5^{3}$
Weight:	$k$	$=$	$2$
Character orbit:	$[\chi]$	$=$	250.d (of order $5$ , degree $4$ , not 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:	$1.99626005053$
Analytic rank:	$0$
Dimension:	$8$
Relative dimension:	$2$ over $\Q(\zeta_{5})$
Coefficient field:	$\Q(\zeta_{20})$
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$x^{8} - x^{6} + x^{4} - x^{2} + 1$ x^8 - x^6 + x^4 - x^2 + 1
Coefficient ring:	$\Z[a_1, a_2, a_3]$
Coefficient ring index:	$5$
Twist minimal:	no (minimal twist has level 50)
Sato-Tate group:	$\mathrm{SU}(2)[C_{5}]$

$q$ -expansion

comment: q-expansion

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

gp: mfcoefs(f, 20)

Coefficients of the $q$ -expansion are expressed in terms of a basis $1,\beta_1,\ldots,\beta_{7}$ for the coefficient ring described below. We also show the integral $q$ -expansion of the trace form.

$f(q)$	$=$	$q + \beta_{4} q^{2} + (\beta_{2} - \beta_1) q^{3} - \beta_1 q^{4} + ( - \beta_{7} + \beta_{5} - \beta_{4} + \cdots + 1) q^{6} + (\beta_{7} - \beta_{5} + \beta_{2} + 2) q^{7} + ( - \beta_{4} + \beta_{3} - \beta_1 + 1) q^{8}+ \cdots + (3 \beta_{7} - \beta_{5} + \cdots + \beta_{2}) q^{99}+O(q^{100})$ q + b4 * q^2 + (b2 - b1) * q^3 - b1 * q^4 + (-b7 + b5 - b4 + b3 - b1 + 1) * q^6 + (b7 - b5 + b2 + 2) * q^7 + (-b4 + b3 - b1 + 1) * q^8 + (2b6 + b4 - 2b2 + b1) * q^9 + (2b7 - b6 + b5 + b4 - 2b2 + b1 - 1) * q^11 + (b6 + b3 - b2) * q^12 + (-b5 + b4 + 3b3 + b1) q^13 + (-b7 - b6 + b5 + 2b4 + b2) q^14 + b3 * q^16 + (-b6 + 2b4 - 2b3 + 2b1 - 2) q^17 + (2b7 + b4 - b3 - 1) q^18 + (b6 + b4 + b3 - b1 - 1) * q^19 + (-b7 + b6 + 3b3 + b2 - b1 + 3) q^21 + (2b7 - 2b6 - b3 - b2 - 1) * q^22 + (-b7 + b6 - b5 + b2 + 2b1 - 2) q^23 + (b7 - 1) * q^24 + (-b5 + b4 - b3 + b2 - 4) * q^26 + (-b7 - 4b4 + b2 - 3b1 + 3) * q^27 + (-b7 + b6 - b2 - 2b1) q^28 + (-3b3 - b2 + 4b1 - 3) * q^29 + (2b6 + b4 - 3b3 + 3b1 - 1) q^31 - q^32 + (-3b6 - 4b3 + 4b1) q^33 + (-b5 - 2b3) q^34 + (-2b6 + 2b5 - b4 - b1 + 1) * q^36 + (b6 - b5 + b4 + 4b3 - b2 + b1) q^37 + (b5 - 2b4 + b3 - 2b1) * q^38 + (-2b7 - 4b6 + 4b5 - 5b4 + 2b2 - 3b1 + 3) * q^39 + (-2b6 - 4b5 - 4b4 - b3 + 2b2 - 4b1) q^41 + (-b7 + b6 + b5 + 2b4 + b3 - b1 - 2) q^42 + (-2b7 + 3b5 + 3b4 - 3b3 - 3b2 + 2) q^43 + (b7 - 2b6 - b5 - b4 + 1) q^44 + (-b7 + b6 - 2b3 + b2 + 2b1 - 2) * q^46 + (-3b7 + 3b6 - 4b3 + 3b2 - 4) * q^47 + (-b6 + b5 - b4) * q^48 + (4b7 - 4b5 - 4b4 + 4b3 + 4b2 + 4) q^49 + (-2b7 - b5 + 2b4 - 2b3 + b2 + 1) q^51 + (-b7 - 4b4 + b2 - b1 + 1) q^52 + (2b3 + 2b2 - 2b1 + 2) q^53 + (-b7 + b6 + 3b3 + b1 + 3) q^54 + (b7 + b6 - b5 - 2b4 + 2b3 - 2b1 + 2) q^56 + (-b7 + 3b5 - 4b4 + 4b3 - 3b2 + 2) * q^57 + (b7 - b5 + b4 - 4b3 + 4b1 - 1) * q^58 - 4b5 q^59 + (3b7 + b6 - b5 + 2b4 - 3b2 + 3b1 - 3) * q^61 + (2b5 + 2b4 - 3b3 + 2b1) * q^62 + (2b6 + b5 - 4b4 - 2b3 - 2b2 - 4b1) q^63 - b4 * q^64 + (-3b5 + 4b4 - 4b3 + 4b1) * q^66 + (-2b7 - b6 + 2b5 + b3 - b1) * q^67 + (-b5 + b2 + 2) * q^68 + (-b7 - b6 + b5 - 2b4 + b3 - b1 + 2) q^69 + (-6b3 - 2b2 + b1 - 6) * q^71 + (b3 - 2b2 + 1) q^72 + (4b7 - 6b4 - 4b2) q^73 + (b7 - b5 + b4 - b3 + b2 - 5) * q^74 + (b5 - 2b4 + 2b3 - b2 + 1) * q^76 + (3b7 - 4b6 + 4b5 - 3b2 + 3b1 - 3) q^77 + (-2b7 + 2b6 + 3b3 - 4b2 + 2b1 + 3) q^78 + (-2b7 + 2b6 + 2b3 - 4b2 - 6b1 + 2) q^79 + (-2b7 + 4b6 + 2b5 + 2b4 - 2) * q^81 + (-2b7 - 4b5 - 4b4 + 4b3 + 4b2 + 5) q^82 + (5b6 + 6b4 - b3 + b1 - 6) * q^83 + (b6 + b5 - 3b4 + b3 - b2 - 3b1) * q^84 + (3b7 + 2b6 - 2b5 + 2b4 - 3b2 - 3b1 + 3) * q^86 + (-2b6 - 3b5 + 2b4 - 6b3 + 2b2 + 2b1) * q^87 + (-b6 - 2b5 + b4 + b2 + b1) q^88 + (8b4 + 6b1 - 6) * q^89 + (-5b6 + 2b5 + b4 + 4b3 + 5b2 + b1) * q^91 + (-b7 + b6 + b5 - 2b3 + 2b1) * q^92 + (-b7 - 2b4 + 2b3 + 3) * q^93 + (-3b7 + 3b6 + 3b5 - 4b4 + 4) * q^94 + (-b2 + b1) * q^96 + (-2b7 + 2b6 + 2b3 - b2 - 8b1 + 2) * q^97 + (-4b7 - 4b6 + 4b5 + 4b4 + 4b2 + 4b1 - 4) * q^98 + (3b7 - b5 + 7b4 - 7b3 + b2) q^99
$\operatorname{Tr}(f)(q)$	$=$	$8 q + 2 q^{2} - 2 q^{3} - 2 q^{4} + 2 q^{6} + 16 q^{7} + 2 q^{8} + 4 q^{9} - 4 q^{11} - 2 q^{12} - 2 q^{13} + 4 q^{14} - 2 q^{16} - 4 q^{17} - 4 q^{18} - 10 q^{19} + 16 q^{21} - 6 q^{22} - 12 q^{23} - 8 q^{24}+ \cdots + 28 q^{99}+O(q^{100})$ 8 * q + 2 * q^2 - 2 * q^3 - 2 * q^4 + 2 * q^6 + 16 * q^7 + 2 * q^8 + 4 * q^9 - 4 * q^11 - 2 * q^12 - 2 * q^13 + 4 * q^14 - 2 * q^16 - 4 * q^17 - 4 * q^18 - 10 * q^19 + 16 * q^21 - 6 * q^22 - 12 * q^23 - 8 * q^24 - 28 * q^26 + 10 * q^27 - 4 * q^28 - 10 * q^29 + 6 * q^31 - 8 * q^32 + 16 * q^33 + 4 * q^34 + 4 * q^36 - 4 * q^37 - 10 * q^38 + 8 * q^39 - 14 * q^41 - 16 * q^42 + 28 * q^43 + 6 * q^44 - 8 * q^46 - 24 * q^47 - 2 * q^48 + 16 * q^49 + 16 * q^51 - 2 * q^52 + 8 * q^53 + 20 * q^54 + 4 * q^56 + 10 * q^58 - 14 * q^61 + 14 * q^62 - 12 * q^63 - 2 * q^64 + 24 * q^66 - 4 * q^67 + 16 * q^68 + 8 * q^69 - 34 * q^71 + 6 * q^72 - 12 * q^73 - 36 * q^74 - 18 * q^77 + 22 * q^78 - 12 * q^81 + 24 * q^82 - 32 * q^83 - 14 * q^84 + 22 * q^86 + 20 * q^87 + 4 * q^88 - 20 * q^89 - 4 * q^91 + 8 * q^92 + 16 * q^93 + 24 * q^94 + 2 * q^96 - 4 * q^97 - 16 * q^98 + 28 * q^99

Basis of coefficient ring

$\beta_{1}$	$=$	$\zeta_{20}^{2}$ v^2
$\beta_{2}$	$=$	$\zeta_{20}^{3} + \zeta_{20}$ v^3 + v
$\beta_{3}$	$=$	$\zeta_{20}^{4}$ v^4
$\beta_{4}$	$=$	$\zeta_{20}^{6}$ v^6
$\beta_{5}$	$=$	$\zeta_{20}^{7} + \zeta_{20}$ v^7 + v
$\beta_{6}$	$=$	$-\zeta_{20}^{5} + \zeta_{20}$ -v^5 + v
$\beta_{7}$	$=$	$-\zeta_{20}^{7} + \zeta_{20}^{5} - \zeta_{20}^{3} + 2\zeta_{20}$ -v^7 + v^5 - v^3 + 2*v

Display $\zeta_{20}^j$ in terms of $\beta_i$

$\zeta_{20}$	$=$	$( \beta_{7} + \beta_{6} + \beta_{5} + \beta_{2} ) / 5$ (b7 + b6 + b5 + b2) / 5
$\zeta_{20}^{2}$	$=$	$\beta_1$ b1
$\zeta_{20}^{3}$	$=$	$( -\beta_{7} - \beta_{6} - \beta_{5} + 4\beta_{2} ) / 5$ (-b7 - b6 - b5 + 4*b2) / 5
$\zeta_{20}^{4}$	$=$	$\beta_{3}$ b3
$\zeta_{20}^{5}$	$=$	$( \beta_{7} - 4\beta_{6} + \beta_{5} + \beta_{2} ) / 5$ (b7 - 4*b6 + b5 + b2) / 5
$\zeta_{20}^{6}$	$=$	$\beta_{4}$ b4
$\zeta_{20}^{7}$	$=$	$( -\beta_{7} - \beta_{6} + 4\beta_{5} - \beta_{2} ) / 5$ (-b7 - b6 + 4*b5 - b2) / 5

Display $\beta_i$ in terms of $\zeta_{20}^j$

Character values

We give the values of $\chi$ on generators for $\left(\mathbb{Z}/250\mathbb{Z}\right)^\times$ .

$n$	$127$
$\chi(n)$	$-\beta_{1}$

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}

51.1

0.587785	+	0.809017i
−0.587785	−	0.809017i
−0.951057	−	0.309017i
0.951057	+	0.309017i
−0.951057	+	0.309017i
0.951057	−	0.309017i
0.587785	−	0.809017i
−0.587785	+	0.809017i

0.809017

−

0.587785i

−0.0542543

0.166977i

0.309017

−

0.951057i

0.0542543

0.166977i

1.27346

−0.309017

−

0.951057i

2.40211

1.74524i

51.2

0.809017

−

0.587785i

0.672288

−

2.06909i

0.309017

−

0.951057i

−0.672288

−

2.06909i

2.72654

−0.309017

−

0.951057i

−1.40211

−

1.01869i

101.1

−0.309017

0.951057i

−2.34786

−

1.70582i

−0.809017

−

0.587785i

2.34786

−

1.70582i

−1.07768

0.809017

−

0.587785i

1.67557

5.15688i

101.2

−0.309017

0.951057i

0.729825

0.530249i

−0.809017

−

0.587785i

−0.729825

0.530249i

5.07768

0.809017

−

0.587785i

−0.675571

−

2.07919i

151.1

−0.309017

−

0.951057i

−2.34786

1.70582i

−0.809017

0.587785i

2.34786

1.70582i

−1.07768

0.809017

0.587785i

1.67557

−

5.15688i

151.2

−0.309017

−

0.951057i

0.729825

−

0.530249i

−0.809017

0.587785i

−0.729825

−

0.530249i

5.07768

0.809017

0.587785i

−0.675571

2.07919i

201.1

0.809017

0.587785i

−0.0542543

−

0.166977i

0.309017

0.951057i

0.0542543

−

0.166977i

1.27346

−0.309017

0.951057i

2.40211

−

1.74524i

201.2

0.809017

0.587785i

0.672288

2.06909i

0.309017

0.951057i

−0.672288

2.06909i

2.72654

−0.309017

0.951057i

−1.40211

1.01869i

Inner twists

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
25.d	even	5	1	inner

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	250.2.d.c		8
5.b	even	2	1		250.2.d.b		8
5.c	odd	4	1		50.2.e.a	✓	8
5.c	odd	4	1		250.2.e.a		8
15.e	even	4	1		450.2.l.b		8
20.e	even	4	1		400.2.y.a		8
25.d	even	5	1	inner	250.2.d.c		8
25.d	even	5	1		1250.2.a.h		4
25.e	even	10	1		250.2.d.b		8
25.e	even	10	1		1250.2.a.i		4
25.f	odd	20	1		50.2.e.a	✓	8
25.f	odd	20	1		250.2.e.a		8
25.f	odd	20	2		1250.2.b.c		8
75.l	even	20	1		450.2.l.b		8
100.h	odd	10	1		10000.2.a.bb		4
100.j	odd	10	1		10000.2.a.o		4
100.l	even	20	1		400.2.y.a		8

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
50.2.e.a	✓	8	5.c	odd	4	1
50.2.e.a	✓	8	25.f	odd	20	1
250.2.d.b		8	5.b	even	2	1
250.2.d.b		8	25.e	even	10	1
250.2.d.c		8	1.a	even	1	1	trivial
250.2.d.c		8	25.d	even	5	1	inner
250.2.e.a		8	5.c	odd	4	1
250.2.e.a		8	25.f	odd	20	1
400.2.y.a		8	20.e	even	4	1
400.2.y.a		8	100.l	even	20	1
450.2.l.b		8	15.e	even	4	1
450.2.l.b		8	75.l	even	20	1
1250.2.a.h		4	25.d	even	5	1
1250.2.a.i		4	25.e	even	10	1
1250.2.b.c		8	25.f	odd	20	2
10000.2.a.o		4	100.j	odd	10	1
10000.2.a.bb		4	100.h	odd	10	1

This newform subspace can be constructed as the kernel of the linear operator $T_{3}^{8} + 2T_{3}^{7} + 3T_{3}^{6} + 4T_{3}^{5} + 30T_{3}^{4} - 46T_{3}^{3} + 28T_{3}^{2} + 2T_{3} + 1$ T3^8 + 2*T3^7 + 3*T3^6 + 4*T3^5 + 30*T3^4 - 46*T3^3 + 28*T3^2 + 2*T3 + 1 acting on $S_{2}^{\mathrm{new}}(250, [\chi])$ .

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$(T^{4} - T^{3} + T^{2} + \cdots + 1)^{2}$ (T^4 - T^3 + T^2 - T + 1)^2
$3$	$T^{8} + 2 T^{7} + \cdots + 1$ T^8 + 2T^7 + 3T^6 + 4T^5 + 30T^4 - 46T^3 + 28T^2 + 2*T + 1
$5$	$T^{8}$ T^8
$7$	$(T^{4} - 8 T^{3} + 14 T^{2} + \cdots - 19)^{2}$ (T^4 - 8T^3 + 14T^2 + 8*T - 19)^2
$11$	$T^{8} + 4 T^{7} + \cdots + 3481$ T^8 + 4T^7 - 3T^6 - 58T^5 + 425T^4 + 818T^3 + 3597T^2 + 2596*T + 3481
$13$	$T^{8} + 2 T^{7} + \cdots + 1681$ T^8 + 2T^7 + 33T^6 + 174T^5 + 705T^4 + 1154T^3 + 7953T^2 + 5822*T + 1681
$17$	$T^{8} + 4 T^{7} + \cdots + 1$ T^8 + 4T^7 + 17T^6 + 72T^5 + 230T^4 + 228T^3 + 92T^2 - 4*T + 1
$19$	$T^{8} + 10 T^{7} + \cdots + 25$ T^8 + 10T^7 + 60T^6 + 220T^5 + 510T^4 + 600T^3 + 375T^2 + 100*T + 25
$23$	$T^{8} + 12 T^{7} + \cdots + 1$ T^8 + 12T^7 + 63T^6 + 124T^5 + 225T^4 + 124T^3 + 63T^2 + 12*T + 1
$29$	$T^{8} + 10 T^{7} + \cdots + 9025$ T^8 + 10T^7 + 105T^6 + 470T^5 + 1785T^4 + 2650T^3 + 25T^2 - 6650*T + 9025
$31$	$T^{8} - 6 T^{7} + \cdots + 361$ T^8 - 6T^7 + 67T^6 - 48T^5 - 175T^4 + 168T^3 + 1867T^2 - 494*T + 361
$37$	$T^{8} + 4 T^{7} + \cdots + 58081$ T^8 + 4T^7 + 67T^6 + 592T^5 + 2850T^4 + 7268T^3 + 18072T^2 + 40006*T + 58081
$41$	$T^{8} + 14 T^{7} + \cdots + 28504921$ T^8 + 14T^7 + 127T^6 + 212T^5 + 3705T^4 + 13228T^3 + 874047T^2 + 3384926*T + 28504921
$43$	$(T^{4} - 14 T^{3} + \cdots - 1919)^{2}$ (T^4 - 14T^3 - 14T^2 + 726*T - 1919)^2
$47$	$T^{8} + 24 T^{7} + \cdots + 8637721$ T^8 + 24T^7 + 407T^6 + 4312T^5 + 34005T^4 + 207928T^3 + 1215327T^2 + 4537816*T + 8637721
$53$	$T^{8} - 8 T^{7} + \cdots + 4096$ T^8 - 8T^7 + 48T^6 - 96T^5 + 1024T^3 + 4608T^2 - 2048T + 4096
$59$	$T^{8} + 2560 T^{4} + \cdots + 1638400$ T^8 + 2560T^4 + 102400T^2 + 1638400
$61$	$T^{8} + 14 T^{7} + \cdots + 32761$ T^8 + 14T^7 + 152T^6 + 702T^5 + 1250T^4 - 8532T^3 + 26027T^2 - 35114*T + 32761
$67$	$T^{8} + 4 T^{7} + \cdots + 3481$ T^8 + 4T^7 - 3T^6 - 58T^5 + 425T^4 + 818T^3 + 3597T^2 + 2596*T + 3481
$71$	$T^{8} + 34 T^{7} + \cdots + 1042441$ T^8 + 34T^7 + 567T^6 + 5552T^5 + 37905T^4 + 169528T^3 + 494407T^2 + 843346*T + 1042441
$73$	$T^{8} + 12 T^{7} + \cdots + 92416$ T^8 + 12T^7 + 108T^6 + 864T^5 + 17680T^4 - 64896T^3 + 127168T^2 - 131328*T + 92416
$79$	$T^{8} + 20 T^{6} + \cdots + 22278400$ T^8 + 20T^6 + 80T^5 + 10960T^4 - 142400T^3 + 1364800T^2 - 6041600T + 22278400
$83$	$T^{8} + 32 T^{7} + \cdots + 17131321$ T^8 + 32T^7 + 593T^6 + 6734T^5 + 63305T^4 + 365554T^3 + 2717273T^2 + 9966712*T + 17131321
$89$	$(T^{4} + 10 T^{3} + \cdots + 400)^{2}$ (T^4 + 10T^3 + 160T^2 + 400*T + 400)^2
$97$	$T^{8} + 4 T^{7} + \cdots + 130321$ T^8 + 4T^7 + 132T^6 + 1412T^5 + 11630T^4 + 25928T^3 + 516417T^2 + 417316*T + 130321
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Overview	Random
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Classical	Maass
Hilbert	Bianchi

Elliptic curves over $\Q$
Elliptic curves over $\Q(\alpha)$
Genus 2 curves over $\Q$
Higher genus families
Abelian varieties over $\F_{q}$

$n$ :		e.g. 2-40 or 990-1000
Embeddings:		e.g. 1-3 or 51.2
Significant digits:
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Introduction

L-functions

Modular forms

Varieties

Fields

Representations

Groups

Database

Properties

Related objects

Downloads

Learn more

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	250.2.d.c

Level	$250$
Weight	$2$
Character orbit	250.d
Analytic conductor	$1.996$
Analytic rank	$0$
Dimension	$8$
Inner twists	$2$