# Properties

 Label 2100.1.bn.c Level $2100$ Weight $1$ Character orbit 2100.bn Analytic conductor $1.048$ Analytic rank $0$ Dimension $2$ Projective image $D_{3}$ CM discriminant -3 Inner twists $4$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [2100,1,Mod(401,2100)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2100, base_ring=CyclotomicField(6))

chi = DirichletCharacter(H, H._module([0, 3, 0, 2]))

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

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

chi := DirichletCharacter("2100.401");

S:= CuspForms(chi, 1);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$2100 = 2^{2} \cdot 3 \cdot 5^{2} \cdot 7$$ Weight: $$k$$ $$=$$ $$1$$ Character orbit: $$[\chi]$$ $$=$$ 2100.bn (of order $$6$$, degree $$2$$, 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: $$1.04803652653$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\zeta_{6})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - x + 1$$ x^2 - x + 1 Coefficient ring: $$\Z[a_1, a_2, a_3]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 84) Projective image: $$D_{3}$$ Projective field: Galois closure of 3.1.588.1 Artin image: $C_6\times S_3$ Artin field: Galois closure of $$\mathbb{Q}[x]/(x^{12} - \cdots)$$

## $q$-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.

 $$f(q)$$ $$=$$ $$q - \zeta_{6}^{2} q^{3} + \zeta_{6} q^{7} - \zeta_{6} q^{9} +O(q^{10})$$ q - z^2 * q^3 + z * q^7 - z * q^9 $$q - \zeta_{6}^{2} q^{3} + \zeta_{6} q^{7} - \zeta_{6} q^{9} + q^{13} + \zeta_{6} q^{19} + q^{21} - q^{27} - \zeta_{6}^{2} q^{31} - \zeta_{6} q^{37} - \zeta_{6}^{2} q^{39} + q^{43} + \zeta_{6}^{2} q^{49} + q^{57} - \zeta_{6} q^{61} - \zeta_{6}^{2} q^{63} + \zeta_{6}^{2} q^{67} + \zeta_{6}^{2} q^{73} + \zeta_{6} q^{79} + \zeta_{6}^{2} q^{81} + \zeta_{6} q^{91} - \zeta_{6} q^{93} - q^{97} +O(q^{100})$$ q - z^2 * q^3 + z * q^7 - z * q^9 + q^13 + z * q^19 + q^21 - q^27 - z^2 * q^31 - z * q^37 - z^2 * q^39 + q^43 + z^2 * q^49 + q^57 - z * q^61 - z^2 * q^63 + z^2 * q^67 + z^2 * q^73 + z * q^79 + z^2 * q^81 + z * q^91 - z * q^93 - q^97 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q + q^{3} + q^{7} - q^{9}+O(q^{10})$$ 2 * q + q^3 + q^7 - q^9 $$2 q + q^{3} + q^{7} - q^{9} + 2 q^{13} + q^{19} + 2 q^{21} - 2 q^{27} + q^{31} - q^{37} + q^{39} + 2 q^{43} - q^{49} + 2 q^{57} - 2 q^{61} + q^{63} - q^{67} - q^{73} + q^{79} - q^{81} + q^{91} - q^{93} - 4 q^{97}+O(q^{100})$$ 2 * q + q^3 + q^7 - q^9 + 2 * q^13 + q^19 + 2 * q^21 - 2 * q^27 + q^31 - q^37 + q^39 + 2 * q^43 - q^49 + 2 * q^57 - 2 * q^61 + q^63 - q^67 - q^73 + q^79 - q^81 + q^91 - q^93 - 4 * q^97

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/2100\mathbb{Z}\right)^\times$$.

 $$n$$ $$701$$ $$1051$$ $$1177$$ $$1501$$ $$\chi(n)$$ $$-1$$ $$1$$ $$1$$ $$-\zeta_{6}$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
401.1
 0.5 − 0.866025i 0.5 + 0.866025i
0 0.500000 + 0.866025i 0 0 0 0.500000 0.866025i 0 −0.500000 + 0.866025i 0
1901.1 0 0.500000 0.866025i 0 0 0 0.500000 + 0.866025i 0 −0.500000 0.866025i 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 CM by $$\Q(\sqrt{-3})$$
7.c even 3 1 inner
21.h odd 6 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2100.1.bn.c 2
3.b odd 2 1 CM 2100.1.bn.c 2
5.b even 2 1 84.1.p.a 2
5.c odd 4 2 2100.1.bh.a 4
7.c even 3 1 inner 2100.1.bn.c 2
15.d odd 2 1 84.1.p.a 2
15.e even 4 2 2100.1.bh.a 4
20.d odd 2 1 336.1.bn.a 2
21.h odd 6 1 inner 2100.1.bn.c 2
35.c odd 2 1 588.1.p.a 2
35.i odd 6 1 588.1.c.a 1
35.i odd 6 1 588.1.p.a 2
35.j even 6 1 84.1.p.a 2
35.j even 6 1 588.1.c.b 1
35.l odd 12 2 2100.1.bh.a 4
40.e odd 2 1 1344.1.bn.a 2
40.f even 2 1 1344.1.bn.b 2
45.h odd 6 1 2268.1.m.a 2
45.h odd 6 1 2268.1.bh.b 2
45.j even 6 1 2268.1.m.a 2
45.j even 6 1 2268.1.bh.b 2
60.h even 2 1 336.1.bn.a 2
105.g even 2 1 588.1.p.a 2
105.o odd 6 1 84.1.p.a 2
105.o odd 6 1 588.1.c.b 1
105.p even 6 1 588.1.c.a 1
105.p even 6 1 588.1.p.a 2
105.x even 12 2 2100.1.bh.a 4
120.i odd 2 1 1344.1.bn.b 2
120.m even 2 1 1344.1.bn.a 2
140.c even 2 1 2352.1.bn.a 2
140.p odd 6 1 336.1.bn.a 2
140.p odd 6 1 2352.1.d.a 1
140.s even 6 1 2352.1.d.b 1
140.s even 6 1 2352.1.bn.a 2
280.bf even 6 1 1344.1.bn.b 2
280.bi odd 6 1 1344.1.bn.a 2
315.r even 6 1 2268.1.m.a 2
315.v odd 6 1 2268.1.bh.b 2
315.bo even 6 1 2268.1.bh.b 2
315.br odd 6 1 2268.1.m.a 2
420.o odd 2 1 2352.1.bn.a 2
420.ba even 6 1 336.1.bn.a 2
420.ba even 6 1 2352.1.d.a 1
420.be odd 6 1 2352.1.d.b 1
420.be odd 6 1 2352.1.bn.a 2
840.cg odd 6 1 1344.1.bn.b 2
840.cv even 6 1 1344.1.bn.a 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
84.1.p.a 2 5.b even 2 1
84.1.p.a 2 15.d odd 2 1
84.1.p.a 2 35.j even 6 1
84.1.p.a 2 105.o odd 6 1
336.1.bn.a 2 20.d odd 2 1
336.1.bn.a 2 60.h even 2 1
336.1.bn.a 2 140.p odd 6 1
336.1.bn.a 2 420.ba even 6 1
588.1.c.a 1 35.i odd 6 1
588.1.c.a 1 105.p even 6 1
588.1.c.b 1 35.j even 6 1
588.1.c.b 1 105.o odd 6 1
588.1.p.a 2 35.c odd 2 1
588.1.p.a 2 35.i odd 6 1
588.1.p.a 2 105.g even 2 1
588.1.p.a 2 105.p even 6 1
1344.1.bn.a 2 40.e odd 2 1
1344.1.bn.a 2 120.m even 2 1
1344.1.bn.a 2 280.bi odd 6 1
1344.1.bn.a 2 840.cv even 6 1
1344.1.bn.b 2 40.f even 2 1
1344.1.bn.b 2 120.i odd 2 1
1344.1.bn.b 2 280.bf even 6 1
1344.1.bn.b 2 840.cg odd 6 1
2100.1.bh.a 4 5.c odd 4 2
2100.1.bh.a 4 15.e even 4 2
2100.1.bh.a 4 35.l odd 12 2
2100.1.bh.a 4 105.x even 12 2
2100.1.bn.c 2 1.a even 1 1 trivial
2100.1.bn.c 2 3.b odd 2 1 CM
2100.1.bn.c 2 7.c even 3 1 inner
2100.1.bn.c 2 21.h odd 6 1 inner
2268.1.m.a 2 45.h odd 6 1
2268.1.m.a 2 45.j even 6 1
2268.1.m.a 2 315.r even 6 1
2268.1.m.a 2 315.br odd 6 1
2268.1.bh.b 2 45.h odd 6 1
2268.1.bh.b 2 45.j even 6 1
2268.1.bh.b 2 315.v odd 6 1
2268.1.bh.b 2 315.bo even 6 1
2352.1.d.a 1 140.p odd 6 1
2352.1.d.a 1 420.ba even 6 1
2352.1.d.b 1 140.s even 6 1
2352.1.d.b 1 420.be odd 6 1
2352.1.bn.a 2 140.c even 2 1
2352.1.bn.a 2 140.s even 6 1
2352.1.bn.a 2 420.o odd 2 1
2352.1.bn.a 2 420.be odd 6 1

## Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator $$T_{13} - 1$$ acting on $$S_{1}^{\mathrm{new}}(2100, [\chi])$$.

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2}$$
$3$ $$T^{2} - T + 1$$
$5$ $$T^{2}$$
$7$ $$T^{2} - T + 1$$
$11$ $$T^{2}$$
$13$ $$(T - 1)^{2}$$
$17$ $$T^{2}$$
$19$ $$T^{2} - T + 1$$
$23$ $$T^{2}$$
$29$ $$T^{2}$$
$31$ $$T^{2} - T + 1$$
$37$ $$T^{2} + T + 1$$
$41$ $$T^{2}$$
$43$ $$(T - 1)^{2}$$
$47$ $$T^{2}$$
$53$ $$T^{2}$$
$59$ $$T^{2}$$
$61$ $$T^{2} + 2T + 4$$
$67$ $$T^{2} + T + 1$$
$71$ $$T^{2}$$
$73$ $$T^{2} + T + 1$$
$79$ $$T^{2} - T + 1$$
$83$ $$T^{2}$$
$89$ $$T^{2}$$
$97$ $$(T + 2)^{2}$$