# Properties

 Label 1872.4.a.t Level $1872$ Weight $4$ Character orbit 1872.a Self dual yes Analytic conductor $110.452$ Analytic rank $0$ Dimension $2$ CM no Inner twists $1$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [1872,4,Mod(1,1872)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(1872, base_ring=CyclotomicField(2))

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

N = Newforms(chi, 4, names="a")

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

chi := DirichletCharacter("1872.1");

S:= CuspForms(chi, 4);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$1872 = 2^{4} \cdot 3^{2} \cdot 13$$ Weight: $$k$$ $$=$$ $$4$$ Character orbit: $$[\chi]$$ $$=$$ 1872.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: $$110.451575531$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\sqrt{14})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - 14$$ x^2 - 14 Coefficient ring: $$\Z[a_1, \ldots, a_{5}]$$ Coefficient ring index: $$2$$ Twist minimal: no (minimal twist has level 39) 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)

Coefficients of the $$q$$-expansion are expressed in terms of $$\beta = 2\sqrt{14}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + (\beta - 12) q^{5} + \beta q^{7}+O(q^{10})$$ q + (b - 12) * q^5 + b * q^7 $$q + (\beta - 12) q^{5} + \beta q^{7} + ( - 6 \beta - 22) q^{11} - 13 q^{13} + ( - 2 \beta - 82) q^{17} + ( - \beta - 24) q^{19} + (24 \beta + 4) q^{23} + ( - 24 \beta + 75) q^{25} + (12 \beta - 202) q^{29} + (13 \beta - 20) q^{31} + ( - 12 \beta + 56) q^{35} + (14 \beta - 50) q^{37} + ( - 47 \beta - 100) q^{41} + ( - 26 \beta + 308) q^{43} + (16 \beta - 162) q^{47} - 287 q^{49} + (60 \beta + 82) q^{53} + (50 \beta - 72) q^{55} + (20 \beta + 70) q^{59} + (68 \beta + 314) q^{61} + ( - 13 \beta + 156) q^{65} + (85 \beta + 236) q^{67} + ( - 42 \beta + 214) q^{71} + (38 \beta - 450) q^{73} + ( - 22 \beta - 336) q^{77} + (44 \beta + 216) q^{79} + (32 \beta - 694) q^{83} + ( - 58 \beta + 872) q^{85} + (95 \beta - 480) q^{89} - 13 \beta q^{91} + ( - 12 \beta + 232) q^{95} + ( - 110 \beta - 266) q^{97} +O(q^{100})$$ q + (b - 12) * q^5 + b * q^7 + (-6*b - 22) * q^11 - 13 * q^13 + (-2*b - 82) * q^17 + (-b - 24) * q^19 + (24*b + 4) * q^23 + (-24*b + 75) * q^25 + (12*b - 202) * q^29 + (13*b - 20) * q^31 + (-12*b + 56) * q^35 + (14*b - 50) * q^37 + (-47*b - 100) * q^41 + (-26*b + 308) * q^43 + (16*b - 162) * q^47 - 287 * q^49 + (60*b + 82) * q^53 + (50*b - 72) * q^55 + (20*b + 70) * q^59 + (68*b + 314) * q^61 + (-13*b + 156) * q^65 + (85*b + 236) * q^67 + (-42*b + 214) * q^71 + (38*b - 450) * q^73 + (-22*b - 336) * q^77 + (44*b + 216) * q^79 + (32*b - 694) * q^83 + (-58*b + 872) * q^85 + (95*b - 480) * q^89 - 13*b * q^91 + (-12*b + 232) * q^95 + (-110*b - 266) * q^97 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q - 24 q^{5}+O(q^{10})$$ 2 * q - 24 * q^5 $$2 q - 24 q^{5} - 44 q^{11} - 26 q^{13} - 164 q^{17} - 48 q^{19} + 8 q^{23} + 150 q^{25} - 404 q^{29} - 40 q^{31} + 112 q^{35} - 100 q^{37} - 200 q^{41} + 616 q^{43} - 324 q^{47} - 574 q^{49} + 164 q^{53} - 144 q^{55} + 140 q^{59} + 628 q^{61} + 312 q^{65} + 472 q^{67} + 428 q^{71} - 900 q^{73} - 672 q^{77} + 432 q^{79} - 1388 q^{83} + 1744 q^{85} - 960 q^{89} + 464 q^{95} - 532 q^{97}+O(q^{100})$$ 2 * q - 24 * q^5 - 44 * q^11 - 26 * q^13 - 164 * q^17 - 48 * q^19 + 8 * q^23 + 150 * q^25 - 404 * q^29 - 40 * q^31 + 112 * q^35 - 100 * q^37 - 200 * q^41 + 616 * q^43 - 324 * q^47 - 574 * q^49 + 164 * q^53 - 144 * q^55 + 140 * q^59 + 628 * q^61 + 312 * q^65 + 472 * q^67 + 428 * q^71 - 900 * q^73 - 672 * q^77 + 432 * q^79 - 1388 * q^83 + 1744 * q^85 - 960 * q^89 + 464 * q^95 - 532 * q^97

## 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
 −3.74166 3.74166
0 0 0 −19.4833 0 −7.48331 0 0 0
1.2 0 0 0 −4.51669 0 7.48331 0 0 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
$$2$$ $$-1$$
$$3$$ $$-1$$
$$13$$ $$1$$

## 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 1872.4.a.t 2
3.b odd 2 1 624.4.a.r 2
4.b odd 2 1 117.4.a.c 2
12.b even 2 1 39.4.a.b 2
24.f even 2 1 2496.4.a.bc 2
24.h odd 2 1 2496.4.a.s 2
52.b odd 2 1 1521.4.a.s 2
60.h even 2 1 975.4.a.j 2
84.h odd 2 1 1911.4.a.h 2
156.h even 2 1 507.4.a.f 2
156.l odd 4 2 507.4.b.f 4

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
39.4.a.b 2 12.b even 2 1
117.4.a.c 2 4.b odd 2 1
507.4.a.f 2 156.h even 2 1
507.4.b.f 4 156.l odd 4 2
624.4.a.r 2 3.b odd 2 1
975.4.a.j 2 60.h even 2 1
1521.4.a.s 2 52.b odd 2 1
1872.4.a.t 2 1.a even 1 1 trivial
1911.4.a.h 2 84.h odd 2 1
2496.4.a.s 2 24.h odd 2 1
2496.4.a.bc 2 24.f even 2 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{4}^{\mathrm{new}}(\Gamma_0(1872))$$:

 $$T_{5}^{2} + 24T_{5} + 88$$ T5^2 + 24*T5 + 88 $$T_{7}^{2} - 56$$ T7^2 - 56

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2}$$
$3$ $$T^{2}$$
$5$ $$T^{2} + 24T + 88$$
$7$ $$T^{2} - 56$$
$11$ $$T^{2} + 44T - 1532$$
$13$ $$(T + 13)^{2}$$
$17$ $$T^{2} + 164T + 6500$$
$19$ $$T^{2} + 48T + 520$$
$23$ $$T^{2} - 8T - 32240$$
$29$ $$T^{2} + 404T + 32740$$
$31$ $$T^{2} + 40T - 9064$$
$37$ $$T^{2} + 100T - 8476$$
$41$ $$T^{2} + 200T - 113704$$
$43$ $$T^{2} - 616T + 57008$$
$47$ $$T^{2} + 324T + 11908$$
$53$ $$T^{2} - 164T - 194876$$
$59$ $$T^{2} - 140T - 17500$$
$61$ $$T^{2} - 628T - 160348$$
$67$ $$T^{2} - 472T - 348904$$
$71$ $$T^{2} - 428T - 52988$$
$73$ $$T^{2} + 900T + 121636$$
$79$ $$T^{2} - 432T - 61760$$
$83$ $$T^{2} + 1388 T + 424292$$
$89$ $$T^{2} + 960T - 275000$$
$97$ $$T^{2} + 532T - 606844$$