# Properties

 Label 1904.2.a.c Level $1904$ Weight $2$ Character orbit 1904.a Self dual yes Analytic conductor $15.204$ Analytic rank $1$ Dimension $1$ CM no Inner twists $1$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [1904,2,Mod(1,1904)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(1904, base_ring=CyclotomicField(2))

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

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

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

chi := DirichletCharacter("1904.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$1904 = 2^{4} \cdot 7 \cdot 17$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 1904.a (trivial)

## 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: yes Analytic conductor: $$15.2035165449$$ Analytic rank: $$1$$ Dimension: $$1$$ Coefficient field: $$\mathbb{Q}$$ Coefficient ring: $$\mathbb{Z}$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 238) Fricke sign: $$1$$ Sato-Tate group: $\mathrm{SU}(2)$

## $q$-expansion

comment: q-expansion

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

gp: mfcoefs(f, 20)

 $$f(q)$$ $$=$$ $$q - 2 q^{5} + q^{7} - 3 q^{9}+O(q^{10})$$ q - 2 * q^5 + q^7 - 3 * q^9 $$q - 2 q^{5} + q^{7} - 3 q^{9} + 2 q^{11} - q^{17} + 2 q^{19} + 8 q^{23} - q^{25} - 8 q^{31} - 2 q^{35} - 4 q^{37} - 6 q^{41} - 4 q^{43} + 6 q^{45} - 8 q^{47} + q^{49} - 6 q^{53} - 4 q^{55} - 10 q^{59} + 10 q^{61} - 3 q^{63} - 8 q^{67} - 4 q^{71} - 10 q^{73} + 2 q^{77} + 4 q^{79} + 9 q^{81} + 6 q^{83} + 2 q^{85} - 6 q^{89} - 4 q^{95} - 14 q^{97} - 6 q^{99}+O(q^{100})$$ q - 2 * q^5 + q^7 - 3 * q^9 + 2 * q^11 - q^17 + 2 * q^19 + 8 * q^23 - q^25 - 8 * q^31 - 2 * q^35 - 4 * q^37 - 6 * q^41 - 4 * q^43 + 6 * q^45 - 8 * q^47 + q^49 - 6 * q^53 - 4 * q^55 - 10 * q^59 + 10 * q^61 - 3 * q^63 - 8 * q^67 - 4 * q^71 - 10 * q^73 + 2 * q^77 + 4 * q^79 + 9 * q^81 + 6 * q^83 + 2 * q^85 - 6 * q^89 - 4 * q^95 - 14 * q^97 - 6 * q^99

## 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   $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
1.1
 0
0 0 0 −2.00000 0 1.00000 0 −3.00000 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Atkin-Lehner signs

$$p$$ Sign
$$2$$ $$-1$$
$$7$$ $$-1$$
$$17$$ $$1$$

## Inner twists

This newform does not admit any (nontrivial) inner twists.

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1904.2.a.c 1
4.b odd 2 1 238.2.a.a 1
8.b even 2 1 7616.2.a.h 1
8.d odd 2 1 7616.2.a.g 1
12.b even 2 1 2142.2.a.s 1
20.d odd 2 1 5950.2.a.o 1
28.d even 2 1 1666.2.a.e 1
68.d odd 2 1 4046.2.a.d 1

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
238.2.a.a 1 4.b odd 2 1
1666.2.a.e 1 28.d even 2 1
1904.2.a.c 1 1.a even 1 1 trivial
2142.2.a.s 1 12.b even 2 1
4046.2.a.d 1 68.d odd 2 1
5950.2.a.o 1 20.d odd 2 1
7616.2.a.g 1 8.d odd 2 1
7616.2.a.h 1 8.b even 2 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(1904))$$:

 $$T_{3}$$ T3 $$T_{5} + 2$$ T5 + 2

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T$$
$3$ $$T$$
$5$ $$T + 2$$
$7$ $$T - 1$$
$11$ $$T - 2$$
$13$ $$T$$
$17$ $$T + 1$$
$19$ $$T - 2$$
$23$ $$T - 8$$
$29$ $$T$$
$31$ $$T + 8$$
$37$ $$T + 4$$
$41$ $$T + 6$$
$43$ $$T + 4$$
$47$ $$T + 8$$
$53$ $$T + 6$$
$59$ $$T + 10$$
$61$ $$T - 10$$
$67$ $$T + 8$$
$71$ $$T + 4$$
$73$ $$T + 10$$
$79$ $$T - 4$$
$83$ $$T - 6$$
$89$ $$T + 6$$
$97$ $$T + 14$$