LMFDB - Newform orbit 1815.4.a.bb

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [1815,4,Mod(1,1815)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(1815, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([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("1815.1");

S:= CuspForms(chi, 4);

N := Newforms(S);

Level:	$N$	$=$	$1815 = 3 \cdot 5 \cdot 11^{2}$
Weight:	$k$	$=$	$4$
Character orbit:	$[\chi]$	$=$	1815.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:	$107.088466660$
Analytic rank:	$0$
Dimension:	$6$
Coefficient field:	$\mathbb{Q}[x]/(x^{6} - \cdots)$
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$x^{6} - 44x^{4} + 495x^{2} - 1200$ x^6 - 44x^4 + 495x^2 - 1200
Coefficient ring:	$\Z[a_1, \ldots, a_{7}]$
Coefficient ring index:	$2^{4}\cdot 5$
Twist minimal:	yes
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 a basis $1,\beta_1,\ldots,\beta_{5}$ for the coefficient ring described below. We also show the integral $q$ -expansion of the trace form.

$f(q)$	$=$	$q + \beta_1 q^{2} + 3 q^{3} + (\beta_{2} + 7) q^{4} + 5 q^{5} + 3 \beta_1 q^{6} + ( - \beta_{3} + \beta_1) q^{7} + (\beta_{4} + \beta_{3} + 6 \beta_1) q^{8} + 9 q^{9} + 5 \beta_1 q^{10} + (3 \beta_{2} + 21) q^{12}+ \cdots + ( - 26 \beta_{4} - 86 \beta_{3} - 45 \beta_1) q^{98}+O(q^{100})$ q + b1 * q^2 + 3 * q^3 + (b2 + 7) * q^4 + 5 * q^5 + 3b1 q^6 + (-b3 + b1) * q^7 + (b4 + b3 + 6b1) q^8 + 9 * q^9 + 5b1 q^10 + (3b2 + 21) q^12 + (-b3 + 3b1) q^13 + (-b5 - b2 + 19) * q^14 + 15 * q^15 + (b5 + 8b2 + 30) q^16 + (-2b4 - 5b3 - 3b1) q^17 + 9b1 q^18 + (2b4 + 6b1) * q^19 + (5b2 + 35) q^20 + (-3b3 + 3b1) * q^21 + (2b5 + 2b2 + 10) * q^23 + (3b4 + 3b3 + 18b1) q^24 + 25 * q^25 + (-b5 + b2 + 49) * q^26 + 27 * q^27 + (-3b4 - 5b3 + b1) * q^28 + (2b4 - 2b3 + 20b1) q^29 + 15b1 q^30 + (12b2 + 100) q^31 + (2b4 + 12b3 + 41b1) q^32 + (-5b5 - 29b2 - 25) * q^34 + (-5b3 + 5b1) * q^35 + (9b2 + 63) q^36 + (2b5 + 2b2 + 56) * q^37 + (22b2 + 90) q^38 + (-3b3 + 9b1) * q^39 + (5b4 + 5b3 + 30b1) q^40 + (2b4 - 2b3) * q^41 + (-3b5 - 3b2 + 57) * q^42 + (11b3 + 65b1) * q^43 + 45 * q^45 + (6b4 + 26b3 + 30b1) q^46 + (4b5 + 12b2 + 20) * q^47 + (3b5 + 24b2 + 90) * q^48 + (-6b5 - 14b2 + 71) * q^49 + 25b1 q^50 + (-6b4 - 15b3 - 9b1) q^51 + (-b4 - 3b3 + 29b1) * q^52 + (2b5 - 34b2 + 40) * q^53 + 27b1 q^54 + (3b5 - 25b2 - 117) * q^56 + (6b4 + 18b1) * q^57 + (-2b5 + 32b2 + 308) * q^58 + (-6b5 + 22b2 + 354) * q^59 + (15b2 + 105) q^60 + (-14b3 + 14b1) * q^61 + (12b4 + 12b3 + 184b1) q^62 + (-9b3 + 9b1) * q^63 + (4b5 + 17b2 + 327) * q^64 + (-5b3 + 15b1) * q^65 + (6b5 - 70b2 - 218) * q^67 + (-23b4 - 49b3 - 219b1) q^68 + (6b5 + 6b2 + 30) * q^69 + (-5b5 - 5b2 + 95) * q^70 + (6b5 + 62b2 + 198) * q^71 + (9b4 + 9b3 + 54b1) q^72 + (-12b4 + 13b3 - 35b1) q^73 + (6b4 + 26b3 + 76b1) q^74 + 75 * q^75 + (6b4 + 22b3 + 196b1) q^76 + (-3b5 + 3b2 + 147) * q^78 + (2b4 - 12b3 - 222b1) q^79 + (5b5 + 40b2 + 150) * q^80 + 81 * q^81 + (-2b5 + 12b2 + 8) * q^82 + (-14b4 + 3b3 + 75b1) q^83 + (-9b4 - 15b3 + 3b1) q^84 + (-10b4 - 25b3 - 15b1) q^85 + (11b5 + 87b2 + 931) * q^86 + (6b4 - 6b3 + 60b1) q^87 + (-4b5 + 12b2 - 110) * q^89 + 45b1 q^90 + (-8b5 - 16b2 + 452) * q^91 + (10b5 + 114b2 + 266) * q^92 + (36b2 + 300) q^93 + (20b4 + 60b3 + 116b1) q^94 + (10b4 + 30b1) * q^95 + (6b4 + 36b3 + 123b1) q^96 + (-10b5 - 74b2 + 444) * q^97 + (-26b4 - 86b3 - 45b1) q^98
$\operatorname{Tr}(f)(q)$	$=$	$6 q + 18 q^{3} + 40 q^{4} + 30 q^{5} + 54 q^{9} + 120 q^{12} + 116 q^{14} + 90 q^{15} + 164 q^{16} + 200 q^{20} + 56 q^{23} + 150 q^{25} + 292 q^{26} + 162 q^{27} + 576 q^{31} - 92 q^{34} + 360 q^{36} + 332 q^{37}+ \cdots + 2812 q^{97}+O(q^{100})$ 6 * q + 18 * q^3 + 40 * q^4 + 30 * q^5 + 54 * q^9 + 120 * q^12 + 116 * q^14 + 90 * q^15 + 164 * q^16 + 200 * q^20 + 56 * q^23 + 150 * q^25 + 292 * q^26 + 162 * q^27 + 576 * q^31 - 92 * q^34 + 360 * q^36 + 332 * q^37 + 496 * q^38 + 348 * q^42 + 270 * q^45 + 96 * q^47 + 492 * q^48 + 454 * q^49 + 308 * q^53 - 652 * q^56 + 1784 * q^58 + 2080 * q^59 + 600 * q^60 + 1928 * q^64 - 1168 * q^67 + 168 * q^69 + 580 * q^70 + 1064 * q^71 + 450 * q^75 + 876 * q^78 + 820 * q^80 + 486 * q^81 + 24 * q^82 + 5412 * q^86 - 684 * q^89 + 2744 * q^91 + 1368 * q^92 + 1728 * q^93 + 2812 * q^97

Basis of coefficient ring in terms of a root $\nu$ of $x^{6} - 44x^{4} + 495x^{2} - 1200$ x^6 - 44*x^4 + 495*x^2 - 1200 :

$\beta_{1}$	$=$	$\nu$ v
$\beta_{2}$	$=$	$\nu^{2} - 15$ v^2 - 15
$\beta_{3}$	$=$	$( \nu^{5} - 34\nu^{3} + 195\nu ) / 10$ (v^5 - 34v^3 + 195v) / 10
$\beta_{4}$	$=$	$( -\nu^{5} + 44\nu^{3} - 415\nu ) / 10$ (-v^5 + 44v^3 - 415v) / 10
$\beta_{5}$	$=$	$\nu^{4} - 32\nu^{2} + 154$ v^4 - 32*v^2 + 154

Display $\nu^j$ in terms of $\beta_i$

$\nu$	$=$	$\beta_1$ b1
$\nu^{2}$	$=$	$\beta_{2} + 15$ b2 + 15
$\nu^{3}$	$=$	$\beta_{4} + \beta_{3} + 22\beta_1$ b4 + b3 + 22*b1
$\nu^{4}$	$=$	$\beta_{5} + 32\beta_{2} + 326$ b5 + 32*b2 + 326
$\nu^{5}$	$=$	$34\beta_{4} + 44\beta_{3} + 553\beta_1$ 34b4 + 44b3 + 553*b1

Display $\beta_i$ in terms of $\nu^j$

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

−5.26184
−3.60164
−1.82790
1.82790
3.60164
5.26184

−5.26184

3.00000

19.6870

5.00000

−15.7855

5.37309

−61.4950

9.00000

−26.3092

1.2

−3.60164

3.00000

4.97180

5.00000

−10.8049

−31.6129

10.9065

9.00000

−18.0082

1.3

−1.82790

3.00000

−4.65878

5.00000

−5.48370

15.0916

23.1390

9.00000

−9.13951

1.4

1.82790

3.00000

−4.65878

5.00000

5.48370

−15.0916

−23.1390

9.00000

9.13951

1.5

3.60164

3.00000

4.97180

5.00000

10.8049

31.6129

−10.9065

9.00000

18.0082

1.6

5.26184

3.00000

19.6870

5.00000

15.7855

−5.37309

61.4950

9.00000

26.3092

Atkin-Lehner signs

$p$	Sign
$3$	$-1$
$5$	$-1$
$11$	$+1$

Inner twists

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
11.b	odd	2	1	inner

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	1815.4.a.bb	✓	6
11.b	odd	2	1	inner	1815.4.a.bb	✓	6

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
1815.4.a.bb	✓	6	1.a	even	1	1	trivial
1815.4.a.bb	✓	6	11.b	odd	2	1	inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $S_{4}^{\mathrm{new}}(\Gamma_0(1815))$ :

T_{2}^{6} - 44T_{2}^{4} + 495T_{2}^{2} - 1200

T_{7}^{6} - 1256T_{7}^{4} + 263040T_{7}^{2} - 6571200

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$T^{6} - 44 T^{4} + \cdots - 1200$ T^6 - 44T^4 + 495T^2 - 1200
$3$	$(T - 3)^{6}$ (T - 3)^6
$5$	$(T - 5)^{6}$ (T - 5)^6
$7$	$T^{6} - 1256 T^{4} + \cdots - 6571200$ T^6 - 1256T^4 + 263040T^2 - 6571200
$11$	$T^{6}$ T^6
$13$	$T^{6} - 1664 T^{4} + \cdots - 5227200$ T^6 - 1664T^4 + 240480T^2 - 5227200
$17$	$T^{6} + \cdots - 31678852800$ T^6 - 30824T^4 + 225465600T^2 - 31678852800
$19$	$T^{6} + \cdots - 6481171200$ T^6 - 13376T^4 + 42923760T^2 - 6481171200
$23$	$(T^{3} - 28 T^{2} + \cdots + 1938432)^{2}$ (T^3 - 28T^2 - 26544T + 1938432)^2
$29$	$T^{6} + \cdots - 2099899468800$ T^6 - 39056T^4 + 500828400T^2 - 2099899468800
$31$	$(T^{3} - 288 T^{2} + \cdots + 761600)^{2}$ (T^3 - 288T^2 + 6000T + 761600)^2
$37$	$(T^{3} - 166 T^{2} + \cdots + 3002872)^{2}$ (T^3 - 166T^2 - 17620T + 3002872)^2
$41$	$T^{6} + \cdots - 12226636800$ T^6 - 20976T^4 + 47007600T^2 - 12226636800
$43$	$T^{6} + \cdots - 107322824836800$ T^6 - 309144T^4 + 21253277760T^2 - 107322824836800
$47$	$(T^{3} - 48 T^{2} + \cdots + 13192704)^{2}$ (T^3 - 48T^2 - 124032T + 13192704)^2
$53$	$(T^{3} - 154 T^{2} + \cdots - 13663032)^{2}$ (T^3 - 154T^2 - 195828T - 13663032)^2
$59$	$(T^{3} - 1040 T^{2} + \cdots + 92904000)^{2}$ (T^3 - 1040T^2 + 43200T + 92904000)^2
$61$	$T^{6} + \cdots - 49478086963200$ T^6 - 246176T^4 + 10104944640T^2 - 49478086963200
$67$	$(T^{3} + 584 T^{2} + \cdots - 538988864)^{2}$ (T^3 + 584T^2 - 882496T - 538988864)^2
$71$	$(T^{3} - 532 T^{2} + \cdots - 101340672)^{2}$ (T^3 - 532T^2 - 701904T - 101340672)^2
$73$	$T^{6} + \cdots - 86\!\cdots\!00$ T^6 - 857424T^4 + 172330185120T^2 - 8638740580075200
$79$	$T^{6} + \cdots - 17\!\cdots\!00$ T^6 - 2309024T^4 + 1264245678960T^2 - 178266992362924800
$83$	$T^{6} + \cdots - 12\!\cdots\!00$ T^6 - 900560T^4 + 71988871200T^2 - 1237610163000000
$89$	$(T^{3} + 342 T^{2} + \cdots - 10996920)^{2}$ (T^3 + 342T^2 - 90804T - 10996920)^2
$97$	$(T^{3} - 1406 T^{2} + \cdots + 927003032)^{2}$ (T^3 - 1406T^2 - 786100T + 927003032)^2
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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 1.6
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

Embeddings

Atkin-Lehner signs

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	1815.4.a.bb

Level	$1815$
Weight	$4$
Character orbit	1815.a
Self dual	yes
Analytic conductor	$107.088$
Analytic rank	$0$
Dimension	$6$
Inner twists	$2$