Properties

Label 1800.2.b.h
Level $1800$
Weight $2$
Character orbit 1800.b
Analytic conductor $14.373$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1800,2,Mod(251,1800)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1800, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1800.251");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1800 = 2^{3} \cdot 3^{2} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1800.b (of order \(2\), degree \(1\), 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: \(14.3730723638\)
Analytic rank: \(0\)
Dimension: \(16\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 2x^{14} + 6x^{12} - 20x^{10} + 33x^{8} - 80x^{6} + 96x^{4} - 128x^{2} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{41}]\)
Coefficient ring index: \( 2^{8}\cdot 3^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

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

\(f(q)\) \(=\) \( q - \beta_{6} q^{2} + \beta_{5} q^{4} - \beta_{15} q^{7} + \beta_{13} q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{6} q^{2} + \beta_{5} q^{4} - \beta_{15} q^{7} + \beta_{13} q^{8} + ( - \beta_{14} + \beta_{13} + \beta_{3}) q^{11} + (\beta_{15} - \beta_{10} - \beta_{8} + \cdots - 1) q^{13}+ \cdots + (2 \beta_{14} - \beta_{12} + \cdots + \beta_1) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q - 4 q^{4}+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 4 q^{4} - 8 q^{16} + 16 q^{19} - 4 q^{22} + 28 q^{28} + 12 q^{34} + 20 q^{46} - 32 q^{49} + 44 q^{52} - 20 q^{58} + 32 q^{64} + 16 q^{67} - 32 q^{73} + 36 q^{76} - 16 q^{82} - 88 q^{88} + 48 q^{91} - 20 q^{94} - 16 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 2x^{14} + 6x^{12} - 20x^{10} + 33x^{8} - 80x^{6} + 96x^{4} - 128x^{2} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 2\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( 2\nu^{2} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{15} - 2\nu^{13} - 10\nu^{11} + 12\nu^{9} - 63\nu^{7} + 112\nu^{5} - 176\nu^{3} + 512\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -\nu^{14} + 14\nu^{12} - 14\nu^{10} + 28\nu^{8} - 49\nu^{6} + 28\nu^{4} - 112\nu^{2} - 528 ) / 80 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{14} + 2\nu^{12} + 10\nu^{10} - 12\nu^{8} + 63\nu^{6} - 112\nu^{4} + 176\nu^{2} - 512 ) / 64 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -7\nu^{15} + 38\nu^{13} - 58\nu^{11} + 156\nu^{9} - 263\nu^{7} + 456\nu^{5} - 384\nu^{3} - 576\nu ) / 640 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 3\nu^{15} - 42\nu^{13} + 82\nu^{11} - 164\nu^{9} + 387\nu^{7} - 564\nu^{5} + 1176\nu^{3} + 224\nu ) / 320 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 7\nu^{14} - 18\nu^{12} + 98\nu^{10} - 196\nu^{8} + 343\nu^{6} - 756\nu^{4} + 784\nu^{2} - 1344 ) / 320 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( \nu^{15} - 2\nu^{13} + 6\nu^{11} - 20\nu^{9} + 33\nu^{7} - 80\nu^{5} + 96\nu^{3} - 128\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 3\nu^{14} + 8\nu^{12} - 18\nu^{10} + 56\nu^{8} - 133\nu^{6} + 206\nu^{4} - 584\nu^{2} + 304 ) / 80 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( -3\nu^{14} + 12\nu^{12} - 22\nu^{10} + 64\nu^{8} - 107\nu^{6} + 134\nu^{4} - 216\nu^{2} - 64 ) / 80 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( -7\nu^{15} + 18\nu^{13} - 98\nu^{11} + 196\nu^{9} - 343\nu^{7} + 756\nu^{5} - 784\nu^{3} + 1344\nu ) / 320 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -21\nu^{15} + 14\nu^{13} - 54\nu^{11} + 28\nu^{9} + 91\nu^{7} + 308\nu^{5} + 1008\nu^{3} - 448\nu ) / 640 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 3\nu^{15} - 2\nu^{13} + 2\nu^{11} - 4\nu^{9} - 13\nu^{7} + 36\nu^{5} - 184\nu^{3} + 224\nu ) / 80 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 7\nu^{14} - 13\nu^{12} + 48\nu^{10} - 86\nu^{8} + 163\nu^{6} - 351\nu^{4} + 184\nu^{2} - 384 ) / 80 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{2} ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{9} + \beta_{7} + 3\beta_{6} + \beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -2\beta_{15} - 2\beta_{11} + 2\beta_{10} + 2\beta_{8} + 2\beta_{5} - \beta_{4} + \beta_{2} - 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 2\beta_{14} + 2\beta_{13} - \beta_{12} - \beta_{9} + \beta_{7} + 3\beta_{6} + \beta_{3} - 2\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -3\beta_{11} + \beta_{10} - 4\beta_{8} + 4\beta_{5} - \beta_{2} + 9 ) / 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 4\beta_{14} + 2\beta_{13} + 3\beta_{12} - 4\beta_{6} - 8\beta_{3} + 3\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 4\beta_{15} + 4\beta_{11} - 8\beta_{8} + 4\beta_{5} - 3\beta_{4} + 3\beta_{2} + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -8\beta_{13} + 8\beta_{12} + 6\beta_{7} + 6\beta_{6} - 10\beta_{3} + \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -12\beta_{15} + 2\beta_{11} + 14\beta_{10} + 28\beta_{8} + 12\beta_{5} - 14\beta_{4} + 7\beta_{2} + 12 ) / 2 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( -4\beta_{13} - 14\beta_{12} - 21\beta_{9} + 7\beta_{7} + 21\beta_{6} + 7\beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( -14\beta_{15} - 14\beta_{11} + 14\beta_{10} + 22\beta_{8} + 14\beta_{5} + 7\beta_{4} + 7\beta_{2} + 119 ) / 2 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( 14\beta_{14} + 14\beta_{13} - 15\beta_{12} + 7\beta_{9} - 7\beta_{7} + 35\beta_{6} - 7\beta_{3} + 56\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 28\beta_{15} - 21\beta_{11} + 7\beta_{10} - 56\beta_{8} + 22\beta_{4} + 49\beta_{2} + 1 ) / 2 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( 56\beta_{14} - 14\beta_{13} + 35\beta_{12} + 92\beta_{9} + 48\beta_{7} + 148\beta_{6} - 8\beta_{3} + \beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1800\mathbb{Z}\right)^\times\).

\(n\) \(577\) \(901\) \(1001\) \(1351\)
\(\chi(n)\) \(1\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
251.1
−0.725815 1.21375i
−0.725815 + 1.21375i
1.41315 + 0.0547972i
1.41315 0.0547972i
−1.16768 + 0.797831i
−1.16768 0.797831i
0.782771 1.17782i
0.782771 + 1.17782i
−0.782771 1.17782i
−0.782771 + 1.17782i
1.16768 + 0.797831i
1.16768 0.797831i
−1.41315 + 0.0547972i
−1.41315 0.0547972i
0.725815 1.21375i
0.725815 + 1.21375i
−1.36318 0.376495i 0 1.71650 + 1.02646i 0 0 1.04148i −1.95344 2.04550i 0 0
251.2 −1.36318 + 0.376495i 0 1.71650 1.02646i 0 0 1.04148i −1.95344 + 2.04550i 0 0
251.3 −1.01919 0.980435i 0 0.0774950 + 1.99850i 0 0 4.53014i 1.88042 2.11283i 0 0
251.4 −1.01919 + 0.980435i 0 0.0774950 1.99850i 0 0 4.53014i 1.88042 + 2.11283i 0 0
251.5 −0.660188 1.25066i 0 −1.12830 + 1.65134i 0 0 1.68313i 2.81016 + 0.320929i 0 0
251.6 −0.660188 + 1.25066i 0 −1.12830 1.65134i 0 0 1.68313i 2.81016 0.320929i 0 0
251.7 −0.408843 1.35383i 0 −1.66570 + 1.10700i 0 0 3.40004i 2.17970 + 1.80247i 0 0
251.8 −0.408843 + 1.35383i 0 −1.66570 1.10700i 0 0 3.40004i 2.17970 1.80247i 0 0
251.9 0.408843 1.35383i 0 −1.66570 1.10700i 0 0 3.40004i −2.17970 + 1.80247i 0 0
251.10 0.408843 + 1.35383i 0 −1.66570 + 1.10700i 0 0 3.40004i −2.17970 1.80247i 0 0
251.11 0.660188 1.25066i 0 −1.12830 1.65134i 0 0 1.68313i −2.81016 + 0.320929i 0 0
251.12 0.660188 + 1.25066i 0 −1.12830 + 1.65134i 0 0 1.68313i −2.81016 0.320929i 0 0
251.13 1.01919 0.980435i 0 0.0774950 1.99850i 0 0 4.53014i −1.88042 2.11283i 0 0
251.14 1.01919 + 0.980435i 0 0.0774950 + 1.99850i 0 0 4.53014i −1.88042 + 2.11283i 0 0
251.15 1.36318 0.376495i 0 1.71650 1.02646i 0 0 1.04148i 1.95344 2.04550i 0 0
251.16 1.36318 + 0.376495i 0 1.71650 + 1.02646i 0 0 1.04148i 1.95344 + 2.04550i 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 251.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
8.d odd 2 1 inner
24.f even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1800.2.b.h 16
3.b odd 2 1 inner 1800.2.b.h 16
4.b odd 2 1 7200.2.b.g 16
5.b even 2 1 1800.2.b.i yes 16
5.c odd 4 2 1800.2.m.f 32
8.b even 2 1 7200.2.b.g 16
8.d odd 2 1 inner 1800.2.b.h 16
12.b even 2 1 7200.2.b.g 16
15.d odd 2 1 1800.2.b.i yes 16
15.e even 4 2 1800.2.m.f 32
20.d odd 2 1 7200.2.b.h 16
20.e even 4 2 7200.2.m.f 32
24.f even 2 1 inner 1800.2.b.h 16
24.h odd 2 1 7200.2.b.g 16
40.e odd 2 1 1800.2.b.i yes 16
40.f even 2 1 7200.2.b.h 16
40.i odd 4 2 7200.2.m.f 32
40.k even 4 2 1800.2.m.f 32
60.h even 2 1 7200.2.b.h 16
60.l odd 4 2 7200.2.m.f 32
120.i odd 2 1 7200.2.b.h 16
120.m even 2 1 1800.2.b.i yes 16
120.q odd 4 2 1800.2.m.f 32
120.w even 4 2 7200.2.m.f 32
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1800.2.b.h 16 1.a even 1 1 trivial
1800.2.b.h 16 3.b odd 2 1 inner
1800.2.b.h 16 8.d odd 2 1 inner
1800.2.b.h 16 24.f even 2 1 inner
1800.2.b.i yes 16 5.b even 2 1
1800.2.b.i yes 16 15.d odd 2 1
1800.2.b.i yes 16 40.e odd 2 1
1800.2.b.i yes 16 120.m even 2 1
1800.2.m.f 32 5.c odd 4 2
1800.2.m.f 32 15.e even 4 2
1800.2.m.f 32 40.k even 4 2
1800.2.m.f 32 120.q odd 4 2
7200.2.b.g 16 4.b odd 2 1
7200.2.b.g 16 8.b even 2 1
7200.2.b.g 16 12.b even 2 1
7200.2.b.g 16 24.h odd 2 1
7200.2.b.h 16 20.d odd 2 1
7200.2.b.h 16 40.f even 2 1
7200.2.b.h 16 60.h even 2 1
7200.2.b.h 16 120.i odd 2 1
7200.2.m.f 32 20.e even 4 2
7200.2.m.f 32 40.i odd 4 2
7200.2.m.f 32 60.l odd 4 2
7200.2.m.f 32 120.w even 4 2

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1800, [\chi])\):

\( T_{7}^{8} + 36T_{7}^{6} + 366T_{7}^{4} + 1028T_{7}^{2} + 729 \) Copy content Toggle raw display
\( T_{23}^{8} - 80T_{23}^{6} + 2136T_{23}^{4} - 19168T_{23}^{2} + 3600 \) Copy content Toggle raw display
\( T_{43}^{4} - 66T_{43}^{2} - 284T_{43} - 335 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} + 2 T^{14} + \cdots + 256 \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( T^{16} \) Copy content Toggle raw display
$7$ \( (T^{8} + 36 T^{6} + \cdots + 729)^{2} \) Copy content Toggle raw display
$11$ \( (T^{8} + 48 T^{6} + \cdots + 4624)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} + 52 T^{6} + 286 T^{4} + \cdots + 9)^{2} \) Copy content Toggle raw display
$17$ \( (T^{8} + 88 T^{6} + \cdots + 10000)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 4 T^{3} - 18 T^{2} + \cdots - 95)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} - 80 T^{6} + \cdots + 3600)^{2} \) Copy content Toggle raw display
$29$ \( (T^{8} - 104 T^{6} + \cdots + 3600)^{2} \) Copy content Toggle raw display
$31$ \( (T^{8} + 164 T^{6} + \cdots + 585225)^{2} \) Copy content Toggle raw display
$37$ \( (T^{8} + 192 T^{6} + \cdots + 57600)^{2} \) Copy content Toggle raw display
$41$ \( (T^{8} + 112 T^{6} + \cdots + 23104)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} - 66 T^{2} + \cdots - 335)^{4} \) Copy content Toggle raw display
$47$ \( (T^{8} - 248 T^{6} + \cdots + 7551504)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} - 112 T^{6} + \cdots + 576)^{2} \) Copy content Toggle raw display
$59$ \( (T^{8} + 184 T^{6} + \cdots + 13456)^{2} \) Copy content Toggle raw display
$61$ \( (T^{8} + 292 T^{6} + \cdots + 1265625)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} - 4 T^{3} - 154 T^{2} + \cdots + 25)^{4} \) Copy content Toggle raw display
$71$ \( (T^{8} - 200 T^{6} + \cdots + 129600)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 8 T^{3} + \cdots + 160)^{4} \) Copy content Toggle raw display
$79$ \( (T^{8} + 432 T^{6} + \cdots + 16646400)^{2} \) Copy content Toggle raw display
$83$ \( (T^{8} + 152 T^{6} + \cdots + 250000)^{2} \) Copy content Toggle raw display
$89$ \( (T^{8} + 384 T^{6} + \cdots + 1638400)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 4 T^{3} + \cdots + 16265)^{4} \) Copy content Toggle raw display
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