Properties

Label 1728.2.p.a
Level $1728$
Weight $2$
Character orbit 1728.p
Analytic conductor $13.798$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $4$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1728,2,Mod(287,1728)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1728, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 3, 5]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1728.287");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1728 = 2^{6} \cdot 3^{3} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1728.p (of order \(6\), degree \(2\), not 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: \(13.7981494693\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} + \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} + 11x^{14} + 85x^{12} + 332x^{10} + 940x^{8} + 1064x^{6} + 880x^{4} + 128x^{2} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{6}\cdot 3^{4} \)
Twist minimal: no (minimal twist has level 576)
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\beta_{5} + \beta_{3} + \beta_{2}) q^{5} + ( - \beta_{15} + \beta_{14} + \cdots + \beta_{10}) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + (\beta_{5} + \beta_{3} + \beta_{2}) q^{5} + ( - \beta_{15} + \beta_{14} + \cdots + \beta_{10}) q^{7}+ \cdots + (\beta_{8} - 2 \beta_{6} + \cdots - 2 \beta_1) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 6 q^{5}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 6 q^{5} + 6 q^{13} - 14 q^{25} - 18 q^{29} + 6 q^{49} + 48 q^{53} - 42 q^{61} - 54 q^{65} + 28 q^{73} - 66 q^{77} - 36 q^{85} + 8 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} + 11x^{14} + 85x^{12} + 332x^{10} + 940x^{8} + 1064x^{6} + 880x^{4} + 128x^{2} + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 678 \nu^{14} + 6789 \nu^{12} + 51076 \nu^{10} + 174698 \nu^{8} + 464941 \nu^{6} + 179896 \nu^{4} + \cdots - 1117832 ) / 392916 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 3399 \nu^{14} + 34180 \nu^{12} + 256058 \nu^{10} + 875809 \nu^{8} + 2248150 \nu^{6} + \cdots - 1217016 ) / 392916 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 15229 \nu^{14} + 164807 \nu^{12} + 1267309 \nu^{10} + 4851724 \nu^{8} + 13616468 \nu^{6} + \cdots + 272784 ) / 1571664 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 2739 \nu^{14} + 27861 \nu^{12} + 206338 \nu^{10} + 705749 \nu^{8} + 1761071 \nu^{6} + 726748 \nu^{4} + \cdots - 522936 ) / 130972 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 11161 \nu^{14} + 124073 \nu^{12} + 960853 \nu^{10} + 3803536 \nu^{8} + 10826822 \nu^{6} + \cdots + 1478952 ) / 392916 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( - 15229 \nu^{14} - 164807 \nu^{12} - 1267309 \nu^{10} - 4851724 \nu^{8} - 13616468 \nu^{6} + \cdots - 272784 ) / 523888 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( - 16809 \nu^{15} - 187872 \nu^{13} - 1462736 \nu^{11} - 5837297 \nu^{9} - 16795704 \nu^{7} + \cdots - 4754976 \nu ) / 785832 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( - 52871 \nu^{14} - 609241 \nu^{12} - 4779695 \nu^{10} - 19636892 \nu^{8} - 56825800 \nu^{6} + \cdots - 7837008 ) / 1571664 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 427 \nu^{15} + 4723 \nu^{13} + 36549 \nu^{11} + 143882 \nu^{9} + 409832 \nu^{7} + 483588 \nu^{5} + \cdots + 112384 \nu ) / 17208 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 76115 \nu^{15} + 866909 \nu^{13} + 6792687 \nu^{11} + 27721648 \nu^{9} + 80801692 \nu^{7} + \cdots + 24160784 \nu ) / 2357496 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 13530 \nu^{15} - 145911 \nu^{13} - 1117489 \nu^{11} - 4239319 \nu^{9} - 11736870 \nu^{7} + \cdots + 869496 \nu ) / 392916 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( - 27507 \nu^{15} - 314408 \nu^{13} - 2465110 \nu^{11} - 10099993 \nu^{9} - 29483494 \nu^{7} + \cdots - 8911640 \nu ) / 785832 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( 82961 \nu^{15} + 892865 \nu^{13} + 6850017 \nu^{11} + 26014876 \nu^{9} + 72425530 \nu^{7} + \cdots - 5684968 \nu ) / 2357496 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 149879 \nu^{15} + 1614221 \nu^{13} + 12349575 \nu^{11} + 46728172 \nu^{9} + 128779516 \nu^{7} + \cdots - 8691136 \nu ) / 2357496 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 56172 \nu^{15} + 604481 \nu^{13} + 4624540 \nu^{11} + 17486008 \nu^{9} + 48189193 \nu^{7} + \cdots - 3195100 \nu ) / 785832 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( 2\beta_{15} - 2\beta_{14} - \beta_{13} + 2\beta_{12} + 2\beta_{10} + \beta_{9} ) / 6 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{6} + 3\beta_{3} \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -8\beta_{15} + 10\beta_{14} + 2\beta_{13} + 4\beta_{12} + 4\beta_{11} + 5\beta_{10} + \beta_{9} + 2\beta_{7} ) / 3 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -6\beta_{6} - \beta_{5} - 14\beta_{3} - 6\beta _1 - 14 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 18 \beta_{15} - 25 \beta_{14} - 5 \beta_{13} - 36 \beta_{12} - 14 \beta_{11} - 50 \beta_{10} + \cdots - 28 \beta_{7} ) / 3 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( \beta_{4} - 9\beta_{2} + 33\beta _1 + 70 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 86 \beta_{15} - 125 \beta_{14} - 31 \beta_{13} + 86 \beta_{12} - 84 \beta_{11} + 125 \beta_{10} + \cdots + 84 \beta_{7} ) / 3 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( 11\beta_{8} + 179\beta_{6} + 63\beta_{5} - 11\beta_{4} + 358\beta_{3} + 63\beta_{2} \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( - 844 \beta_{15} + 1262 \beta_{14} + 382 \beta_{13} + 422 \beta_{12} + 968 \beta_{11} + \cdots + 484 \beta_{7} ) / 3 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( -85\beta_{8} - 969\beta_{6} - 401\beta_{5} - 1854\beta_{3} - 969\beta _1 - 1854 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 2106 \beta_{15} - 3221 \beta_{14} - 1141 \beta_{13} - 4212 \beta_{12} - 2740 \beta_{11} + \cdots - 5480 \beta_{7} ) / 3 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( 571\beta_{4} - 2427\beta_{2} + 5247\beta _1 + 9690 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 10654 \beta_{15} - 16615 \beta_{14} - 6647 \beta_{13} + 10654 \beta_{12} - 15348 \beta_{11} + \cdots + 15348 \beta_{7} ) / 3 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( 3569\beta_{8} + 28429\beta_{6} + 14241\beta_{5} - 3569\beta_{4} + 51022\beta_{3} + 14241\beta_{2} \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 109076 \beta_{15} + 173002 \beta_{14} + 76058 \beta_{13} + 54538 \beta_{12} + 170680 \beta_{11} + \cdots + 85340 \beta_{7} ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1728\mathbb{Z}\right)^\times\).

\(n\) \(325\) \(703\) \(1217\)
\(\chi(n)\) \(-1\) \(-1\) \(-\beta_{3}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
287.1
−0.192865 0.334053i
0.192865 + 0.334053i
1.16543 + 2.01859i
−1.16543 2.01859i
0.539169 + 0.933868i
−0.539169 0.933868i
1.03144 + 1.78651i
−1.03144 1.78651i
−0.192865 + 0.334053i
0.192865 0.334053i
1.16543 2.01859i
−1.16543 + 2.01859i
0.539169 0.933868i
−0.539169 + 0.933868i
1.03144 1.78651i
−1.03144 + 1.78651i
0 0 0 −2.06470 + 3.57617i 0 −0.287429 + 0.165947i 0 0 0
287.2 0 0 0 −2.06470 + 3.57617i 0 0.287429 0.165947i 0 0 0
287.3 0 0 0 −0.959555 + 1.66200i 0 −2.63027 + 1.51859i 0 0 0
287.4 0 0 0 −0.959555 + 1.66200i 0 2.63027 1.51859i 0 0 0
287.5 0 0 0 0.312371 0.541042i 0 −0.751481 + 0.433868i 0 0 0
287.6 0 0 0 0.312371 0.541042i 0 0.751481 0.433868i 0 0 0
287.7 0 0 0 1.21189 2.09905i 0 −3.96035 + 2.28651i 0 0 0
287.8 0 0 0 1.21189 2.09905i 0 3.96035 2.28651i 0 0 0
1439.1 0 0 0 −2.06470 3.57617i 0 −0.287429 0.165947i 0 0 0
1439.2 0 0 0 −2.06470 3.57617i 0 0.287429 + 0.165947i 0 0 0
1439.3 0 0 0 −0.959555 1.66200i 0 −2.63027 1.51859i 0 0 0
1439.4 0 0 0 −0.959555 1.66200i 0 2.63027 + 1.51859i 0 0 0
1439.5 0 0 0 0.312371 + 0.541042i 0 −0.751481 0.433868i 0 0 0
1439.6 0 0 0 0.312371 + 0.541042i 0 0.751481 + 0.433868i 0 0 0
1439.7 0 0 0 1.21189 + 2.09905i 0 −3.96035 2.28651i 0 0 0
1439.8 0 0 0 1.21189 + 2.09905i 0 3.96035 + 2.28651i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 287.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
72.j odd 6 1 inner
72.l even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1728.2.p.a 16
3.b odd 2 1 576.2.p.c yes 16
4.b odd 2 1 inner 1728.2.p.a 16
8.b even 2 1 1728.2.p.c 16
8.d odd 2 1 1728.2.p.c 16
9.c even 3 1 576.2.p.a 16
9.c even 3 1 5184.2.f.f 16
9.d odd 6 1 1728.2.p.c 16
9.d odd 6 1 5184.2.f.a 16
12.b even 2 1 576.2.p.c yes 16
24.f even 2 1 576.2.p.a 16
24.h odd 2 1 576.2.p.a 16
36.f odd 6 1 576.2.p.a 16
36.f odd 6 1 5184.2.f.f 16
36.h even 6 1 1728.2.p.c 16
36.h even 6 1 5184.2.f.a 16
72.j odd 6 1 inner 1728.2.p.a 16
72.j odd 6 1 5184.2.f.f 16
72.l even 6 1 inner 1728.2.p.a 16
72.l even 6 1 5184.2.f.f 16
72.n even 6 1 576.2.p.c yes 16
72.n even 6 1 5184.2.f.a 16
72.p odd 6 1 576.2.p.c yes 16
72.p odd 6 1 5184.2.f.a 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
576.2.p.a 16 9.c even 3 1
576.2.p.a 16 24.f even 2 1
576.2.p.a 16 24.h odd 2 1
576.2.p.a 16 36.f odd 6 1
576.2.p.c yes 16 3.b odd 2 1
576.2.p.c yes 16 12.b even 2 1
576.2.p.c yes 16 72.n even 6 1
576.2.p.c yes 16 72.p odd 6 1
1728.2.p.a 16 1.a even 1 1 trivial
1728.2.p.a 16 4.b odd 2 1 inner
1728.2.p.a 16 72.j odd 6 1 inner
1728.2.p.a 16 72.l even 6 1 inner
1728.2.p.c 16 8.b even 2 1
1728.2.p.c 16 8.d odd 2 1
1728.2.p.c 16 9.d odd 6 1
1728.2.p.c 16 36.h even 6 1
5184.2.f.a 16 9.d odd 6 1
5184.2.f.a 16 36.h even 6 1
5184.2.f.a 16 72.n even 6 1
5184.2.f.a 16 72.p odd 6 1
5184.2.f.f 16 9.c even 3 1
5184.2.f.f 16 36.f odd 6 1
5184.2.f.f 16 72.j odd 6 1
5184.2.f.f 16 72.l even 6 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{8} + 3T_{5}^{7} + 18T_{5}^{6} + 3T_{5}^{5} + 114T_{5}^{4} + 63T_{5}^{3} + 333T_{5}^{2} - 180T_{5} + 144 \) acting on \(S_{2}^{\mathrm{new}}(1728, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( (T^{8} + 3 T^{7} + \cdots + 144)^{2} \) Copy content Toggle raw display
$7$ \( T^{16} - 31 T^{14} + \cdots + 256 \) Copy content Toggle raw display
$11$ \( T^{16} + \cdots + 639128961 \) Copy content Toggle raw display
$13$ \( (T^{8} - 3 T^{7} + \cdots + 20736)^{2} \) Copy content Toggle raw display
$17$ \( (T^{8} + 63 T^{6} + \cdots + 11664)^{2} \) Copy content Toggle raw display
$19$ \( (T^{8} - 75 T^{6} + \cdots + 20736)^{2} \) Copy content Toggle raw display
$23$ \( T^{16} + \cdots + 2176782336 \) Copy content Toggle raw display
$29$ \( (T^{8} + 9 T^{7} + \cdots + 11664)^{2} \) Copy content Toggle raw display
$31$ \( T^{16} + \cdots + 18339659776 \) Copy content Toggle raw display
$37$ \( (T^{8} + 84 T^{6} + \cdots + 20736)^{2} \) Copy content Toggle raw display
$41$ \( (T^{8} - 126 T^{6} + \cdots + 700569)^{2} \) Copy content Toggle raw display
$43$ \( T^{16} + \cdots + 1275989841 \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 142657607172096 \) Copy content Toggle raw display
$53$ \( (T^{4} - 12 T^{3} + \cdots - 384)^{4} \) Copy content Toggle raw display
$59$ \( T^{16} - 144 T^{14} + \cdots + 531441 \) Copy content Toggle raw display
$61$ \( (T^{8} + 21 T^{7} + \cdots + 82944)^{2} \) Copy content Toggle raw display
$67$ \( T^{16} + \cdots + 5103121662081 \) Copy content Toggle raw display
$71$ \( (T^{8} - 432 T^{6} + \cdots + 9144576)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} - 7 T^{3} + \cdots - 188)^{4} \) Copy content Toggle raw display
$79$ \( T^{16} - 235 T^{14} + \cdots + 256 \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 306402103296 \) Copy content Toggle raw display
$89$ \( (T^{8} + 324 T^{6} + \cdots + 2985984)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} - 4 T^{7} + \cdots + 36481)^{2} \) Copy content Toggle raw display
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