LMFDB - Newform orbit 231.4.a.k

Show commands: Magma / Pari/GP / SageMath

Newspace parameters

comment:Compute space of new eigenforms

gp:[N,k,chi] = [231,4,Mod(1,231)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)

sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(231, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0])) N = Newforms(chi, 4, names="a")

magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("231.1"); S:= CuspForms(chi, 4); N := Newforms(S);

Level:	$N$	$=$	$231 = 3 \cdot 7 \cdot 11$
Weight:	$k$	$=$	$4$
Character orbit:	$[\chi]$	$=$	231.a (trivial)

Newform invariants

comment:select newform

sage:traces = [5,-1,-15,21,21] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(5)] == traces)

gp:f = lf[1] \\ Warning: the index may be different

Self dual:	yes
Analytic conductor:	$13.6294412113$
Analytic rank:	$0$
Dimension:	$5$
Coefficient field:	$\mathbb{Q}[x]/(x^{5} - \cdots)$
comment:defining polynomial gp:f.mod \\ as an extension of the character field
Defining polynomial:	$x^{5} - x^{4} - 30x^{3} + 11x^{2} + 185x + 162$ x^5 - x^4 - 30x^3 + 11x^2 + 185*x + 162
Coefficient ring:	$\Z[a_1, a_2]$
Coefficient ring index:	$2$
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 $1,\beta_1,\beta_2,\beta_3,\beta_4$ for the coefficient ring described below. We also show the integral $q$ -expansion of the trace form.

$f(q)$	$=$	$q - \beta_1 q^{2} - 3 q^{3} + (\beta_{2} + \beta_1 + 4) q^{4} + ( - \beta_{4} + 4) q^{5} + 3 \beta_1 q^{6} + 7 q^{7} + ( - \beta_{4} - \beta_{3} + \beta_{2} + \cdots - 8) q^{8} + 9 q^{9} + (\beta_{4} + 3 \beta_{3} + 2 \beta_{2} + \cdots - 4) q^{10}+ \cdots + 99 q^{99}+O(q^{100})$ q - b1 * q^2 - 3 * q^3 + (b2 + b1 + 4) * q^4 + (-b4 + 4) * q^5 + 3b1 q^6 + 7 * q^7 + (-b4 - b3 + b2 - 3b1 - 8) q^8 + 9 * q^9 + (b4 + 3b3 + 2b2 - 2b1 - 4) q^10 + 11 * q^11 + (-3b2 - 3b1 - 12) * q^12 + (-b4 - 5b3 + 2b2 - 5b1 + 21) q^13 - 7b1 q^14 + (3b4 - 12) q^15 + (2b4 + 3b3 - 1) * q^16 + (-2b4 + b3 - 6b2 - 17b1 - 1) q^17 - 9b1 q^18 + (5b4 + 4b3 + 4b2 + 2b1 + 48) * q^19 + (-b4 - 8b3 + b2 - 11b1 + 19) * q^20 - 21 * q^21 - 11b1 q^22 + (-4b4 + 8b3 - 14b1 - 14) q^23 + (3b4 + 3b3 - 3b2 + 9b1 + 24) * q^24 + (-5b4 - 7b3 - 14b2 + b1 + 96) q^25 + (9b4 + 6b3 + 16b2 - 21b1 + 39) * q^26 - 27 * q^27 + (7b2 + 7b1 + 28) * q^28 + (-b4 - b3 - 18b2 - 17b1 + 1) * q^29 + (-3b4 - 9b3 - 6b2 + 6b1 + 12) * q^30 + (-7b3 - 2b2 - 9b1 + 65) q^31 + (-b3 - 15b2 + 18b1 + 87) * q^32 - 33 * q^33 + (6b4 + 11b3 + 8b2 + 57b1 + 177) * q^34 + (-7b4 + 28) q^35 + (9b2 + 9b1 + 36) * q^36 + (-7b4 + 3b3 + 10b2 + 27b1 + 57) * q^37 + (-17b4 - 23b3 - 8b2 - 88b1 + 32) * q^38 + (3b4 + 15b3 - 6b2 + 15b1 - 63) * q^39 + (8b4 - 14b3 + 7b2 + 12b1 + 124) * q^40 + (-4b4 + 9b3 - 2b2 + 41b1 + 229) * q^41 + 21b1 q^42 + (78b1 + 2) q^43 + (11b2 + 11b1 + 44) * q^44 + (-9b4 + 36) q^45 + (-12b4 + 4b3 + 14b2 + 28b1 + 192) * q^46 + (21b4 + 12b3 - 8b2 + 38b1 + 72) * q^47 + (-6b4 - 9b3 + 3) * q^48 + 49 * q^49 + (33b4 + 36b3 - 12b2 + 4b1 - 123) * q^50 + (6b4 - 3b3 + 18b2 + 51b1 + 3) * q^51 + (-29b4 - 9b3 + 13b2 - 98b1 + 214) * q^52 + (6b4 + 4b3 + 44b2 - 26b1 - 192) * q^53 + 27b1 q^54 + (-11b4 + 44) q^55 + (-7b4 - 7b3 + 7b2 - 21b1 - 56) * q^56 + (-15b4 - 12b3 - 12b2 - 6b1 - 144) * q^57 + (21b4 + 22b3 - 16b2 + 127b1 + 123) * q^58 + (31b4 + 15b3 + 10b2 + 17b1 + 17) * q^59 + (3b4 + 24b3 - 3b2 + 33b1 - 57) * q^60 + (4b4 - 16b3 + 12b2 + 40b1 - 122) * q^61 + (16b4 + 9b3 + 12b2 - 37b1 + 65) * q^62 + 63 * q^63 + (b4 - 8b3 - 47b2 - 14b1 - 273) q^64 + (-39b4 - 57b3 + 62b2 + 115b1 + 87) * q^65 + 33b1 q^66 + (-7b4 - 41b3 - 46b2 - 39b1 - 99) * q^67 + (-20b4 - 45b3 - 16b2 - 169b1 - 565) * q^68 + (12b4 - 24b3 + 42b1 + 42) q^69 + (7b4 + 21b3 + 14b2 - 14b1 - 28) * q^70 + (12b4 - 48b3 - 48b2 - 4b1 - 228) * q^71 + (-9b4 - 9b3 + 9b2 - 27b1 - 72) * q^72 + (27b4 + 36b3 - 52b2 - 32b1 + 224) * q^73 + (-9b4 + 8b3 + 4b2 - 133b1 - 297) * q^74 + (15b4 + 21b3 + 42b2 - 3b1 - 288) * q^75 + (31b4 + 50b3 + 97b2 + 145b1 + 457) * q^76 + 77 * q^77 + (-27b4 - 18b3 - 48b2 + 63b1 - 117) * q^78 + (4b4 + 20b3 - 56b2 + 152b1 + 88) * q^79 + (21b4 + 47b3 - 8b2 - 92b1 - 306) * q^80 + 81 * q^81 + (-12b4 + 5b3 - 46b2 - 259b1 - 471) * q^82 + (-12b4 - 21b3 - 38b2 + 181b1 - 81) * q^83 + (-21b2 - 21b1 - 84) * q^84 + (-2b4 + 78b3 - 24b2 + 16b1 + 380) * q^85 + (-78b2 - 80b1 - 936) * q^86 + (3b4 + 3b3 + 54b2 + 51b1 - 3) * q^87 + (-11b4 - 11b3 + 11b2 - 33b1 - 88) * q^88 + (-12b4 + 76b3 + 4b2 + 88b1 + 186) * q^89 + (9b4 + 27b3 + 18b2 - 18b1 - 36) * q^90 + (-7b4 - 35b3 + 14b2 - 35b1 + 147) * q^91 + (22b4 - 46b3 + 20b2 - 172b1 - 196) * q^92 + (21b3 + 6b2 + 27b1 - 195) q^93 + (-37b4 - 67b3 - 108b2 - 116b1 - 344) * q^94 + (-5b4 + 53b3 + 30b2 - 173b1 - 685) * q^95 + (3b3 + 45b2 - 54b1 - 261) q^96 + (58b4 + 48b3 - 12b2 - 54b1 + 520) * q^97 - 49b1 q^98 + 99 * q^99
$\operatorname{Tr}(f)(q)$	$=$	$5 q - q^{2} - 15 q^{3} + 21 q^{4} + 21 q^{5} + 3 q^{6} + 35 q^{7} - 42 q^{8} + 45 q^{9} - 23 q^{10} + 55 q^{11} - 63 q^{12} + 101 q^{13} - 7 q^{14} - 63 q^{15} - 7 q^{16} - 20 q^{17} - 9 q^{18} + 237 q^{19}+ \cdots + 495 q^{99}+O(q^{100})$ 5 * q - q^2 - 15 * q^3 + 21 * q^4 + 21 * q^5 + 3 * q^6 + 35 * q^7 - 42 * q^8 + 45 * q^9 - 23 * q^10 + 55 * q^11 - 63 * q^12 + 101 * q^13 - 7 * q^14 - 63 * q^15 - 7 * q^16 - 20 * q^17 - 9 * q^18 + 237 * q^19 + 85 * q^20 - 105 * q^21 - 11 * q^22 - 80 * q^23 + 126 * q^24 + 486 * q^25 + 165 * q^26 - 135 * q^27 + 147 * q^28 - 11 * q^29 + 69 * q^30 + 316 * q^31 + 453 * q^32 - 165 * q^33 + 936 * q^34 + 147 * q^35 + 189 * q^36 + 319 * q^37 + 89 * q^38 - 303 * q^39 + 624 * q^40 + 1190 * q^41 + 21 * q^42 + 88 * q^43 + 231 * q^44 + 189 * q^45 + 1000 * q^46 + 377 * q^47 + 21 * q^48 + 245 * q^49 - 644 * q^50 + 60 * q^51 + 1001 * q^52 - 992 * q^53 + 27 * q^54 + 231 * q^55 - 294 * q^56 - 711 * q^57 + 721 * q^58 + 71 * q^59 - 255 * q^60 - 574 * q^61 + 272 * q^62 + 315 * q^63 - 1380 * q^64 + 589 * q^65 + 33 * q^66 - 527 * q^67 - 2974 * q^68 + 240 * q^69 - 161 * q^70 - 1156 * q^71 - 378 * q^72 + 1061 * q^73 - 1609 * q^74 - 1458 * q^75 + 2399 * q^76 + 385 * q^77 - 495 * q^78 + 588 * q^79 - 1643 * q^80 + 405 * q^81 - 2602 * q^82 - 212 * q^83 - 441 * q^84 + 1918 * q^85 - 4760 * q^86 + 33 * q^87 - 462 * q^88 + 1030 * q^89 - 207 * q^90 + 707 * q^91 - 1174 * q^92 - 948 * q^93 - 1799 * q^94 - 3593 * q^95 - 1359 * q^96 + 2488 * q^97 - 49 * q^98 + 495 * q^99

Basis of coefficient ring in terms of a root $\nu$ of $x^{5} - x^{4} - 30x^{3} + 11x^{2} + 185x + 162$ x^5 - x^4 - 30*x^3 + 11*x^2 + 185*x + 162 :

$\beta_{1}$	$=$	$\nu$ v
$\beta_{2}$	$=$	$\nu^{2} - \nu - 12$ v^2 - v - 12
$\beta_{3}$	$=$	$\nu^{4} - 2\nu^{3} - 26\nu^{2} + 40\nu + 105$ v^4 - 2v^3 - 26v^2 + 40*v + 105
$\beta_{4}$	$=$	$-\nu^{4} + 3\nu^{3} + 27\nu^{2} - 60\nu - 125$ -v^4 + 3v^3 + 27v^2 - 60*v - 125

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

$\nu$	$=$	$\beta_1$ b1
$\nu^{2}$	$=$	$\beta_{2} + \beta _1 + 12$ b2 + b1 + 12
$\nu^{3}$	$=$	$\beta_{4} + \beta_{3} - \beta_{2} + 19\beta _1 + 8$ b4 + b3 - b2 + 19*b1 + 8
$\nu^{4}$	$=$	$2\beta_{4} + 3\beta_{3} + 24\beta_{2} + 24\beta _1 + 223$ 2b4 + 3b3 + 24b2 + 24b1 + 223

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

4.79323
3.63074
−1.28053
−1.59998
−4.54345

−4.79323

−3.00000

14.9751

−6.25369

14.3797

7.00000

−33.4331

9.00000

29.9754

1.2

−3.63074

−3.00000

5.18226

21.1113

10.8922

7.00000

10.2305

9.00000

−76.6494

1.3

1.28053

−3.00000

−6.36023

16.8824

−3.84160

7.00000

−18.3888

9.00000

21.6185

1.4

1.59998

−3.00000

−5.44007

−17.2762

−4.79994

7.00000

−21.5038

9.00000

−27.6416

1.5

4.54345

−3.00000

12.6430

6.53625

−13.6304

7.00000

21.0952

9.00000

29.6972

Atkin-Lehner signs

$p$	Sign
$3$	$+1$
$7$	$-1$
$11$	$-1$

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	231.4.a.k	✓	5
3.b	odd	2	1		693.4.a.p		5
7.b	odd	2	1		1617.4.a.n		5

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
231.4.a.k	✓	5	1.a	even	1	1	trivial
693.4.a.p		5	3.b	odd	2	1
1617.4.a.n		5	7.b	odd	2	1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $S_{4}^{\mathrm{new}}(\Gamma_0(231))$ :

T_{2}^{5} + T_{2}^{4} - 30T_{2}^{3} - 11T_{2}^{2} + 185T_{2} - 162

T2^5 + T2^4 - 30*T2^3 - 11*T2^2 + 185*T2 - 162

T_{5}^{5} - 21T_{5}^{4} - 335T_{5}^{3} + 7089T_{5}^{2} + 10522T_{5} - 251688

T5^5 - 21*T5^4 - 335*T5^3 + 7089*T5^2 + 10522*T5 - 251688

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$T^{5} + T^{4} + \cdots - 162$ T^5 + T^4 - 30T^3 - 11T^2 + 185*T - 162
$3$	$(T + 3)^{5}$ (T + 3)^5
$5$	$T^{5} - 21 T^{4} + \cdots - 251688$ T^5 - 21T^4 - 335T^3 + 7089T^2 + 10522T - 251688
$7$	$(T - 7)^{5}$ (T - 7)^5
$11$	$(T - 11)^{5}$ (T - 11)^5
$13$	$T^{5} - 101 T^{4} + \cdots - 699186044$ T^5 - 101T^4 - 5277T^3 + 620733T^2 + 3143032T - 699186044
$17$	$T^{5} + 20 T^{4} + \cdots - 21815808$ T^5 + 20T^4 - 16344T^3 - 100984T^2 + 9247904T - 21815808
$19$	$T^{5} + \cdots + 1631765016$ T^5 - 237T^4 + 3973T^3 + 2082521T^2 - 132041586T + 1631765016
$23$	$T^{5} + \cdots + 14963596032$ T^5 + 80T^4 - 40448T^3 - 4125624T^2 + 134028896T + 14963596032
$29$	$T^{5} + \cdots - 14067075228$ T^5 + 11T^4 - 63197T^3 + 317469T^2 + 952001576T - 14067075228
$31$	$T^{5} + \cdots - 2282048512$ T^5 - 316T^4 + 21472T^3 + 1063000T^2 - 71084064T - 2282048512
$37$	$T^{5} + \cdots + 64616128484$ T^5 - 319T^4 - 26737T^3 + 18443455T^2 - 1990866676T + 64616128484
$41$	$T^{5} + \cdots + 5484263424$ T^5 - 1190T^4 + 478056T^3 - 68360096T^2 + 1410136064T + 5484263424
$43$	$T^{5} + \cdots + 454049016064$ T^5 - 88T^4 - 181856T^3 + 6313240T^2 + 6824717408T + 454049016064
$47$	$T^{5} + \cdots - 640713805344$ T^5 - 377T^4 - 211987T^3 + 50125037T^2 + 13610396374T - 640713805344
$53$	$T^{5} + \cdots + 2832799483104$ T^5 + 992T^4 - 27028T^3 - 252361016T^2 - 51924569792T + 2832799483104
$59$	$T^{5} + \cdots + 116007727392$ T^5 - 71T^4 - 516297T^3 + 62751859T^2 + 37264664660T + 116007727392
$61$	$T^{5} + \cdots + 25076058464$ T^5 + 574T^4 - 56824T^3 - 15403088T^2 + 835952080T + 25076058464
$67$	$T^{5} + \cdots + 49084085096528$ T^5 + 527T^4 - 829349T^3 - 310089395T^2 + 158670034776T + 49084085096528
$71$	$T^{5} + \cdots + 182626537218048$ T^5 + 1156T^4 - 833232T^3 - 1210626944T^2 - 24609381376T + 182626537218048
$73$	$T^{5} + \cdots - 70171874704736$ T^5 - 1061T^4 - 741439T^3 + 743135177T^2 + 120657450490T - 70171874704736
$79$	$T^{5} + \cdots + 39894707683328$ T^5 - 588T^4 - 1297264T^3 + 1405942016T^2 - 444149304320T + 39894707683328
$83$	$T^{5} + \cdots + 8874602922624$ T^5 + 212T^4 - 1686280T^3 - 35681032T^2 + 101622256384T + 8874602922624
$89$	$T^{5} + \cdots + 76327550636448$ T^5 - 1030T^4 - 1881064T^3 + 1078211120T^2 + 828720951952T + 76327550636448
$97$	$T^{5} + \cdots + 812915857189728$ T^5 - 2488T^4 + 135980T^3 + 3958980136T^2 - 3408913111296T + 812915857189728
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Elliptic curves over $\Q$
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Genus 2 curves over $\Q$
Higher genus families
Abelian varieties over $\F_{q}$
Belyi maps

$n$ :		e.g. 2-40 or 990-1000
Embeddings:		e.g. 1-3 or 1.5
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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	231.4.a.k

Level	$231$
Weight	$4$
Character orbit	231.a
Self dual	yes
Analytic conductor	$13.629$
Analytic rank	$0$
Dimension	$5$
CM	no
Inner twists	$1$