Properties

Label 1600.2.l.h
Level $1600$
Weight $2$
Character orbit 1600.l
Analytic conductor $12.776$
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] = [1600,2,Mod(401,1600)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1600, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([0, 3, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1600.401");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1600 = 2^{6} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1600.l (of order \(4\), 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: \(12.7760643234\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: 16.0.534694406811304329216.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 2x^{14} - 2x^{12} + 4x^{10} + 4x^{8} + 16x^{6} - 32x^{4} - 128x^{2} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{14} \)
Twist minimal: no (minimal twist has level 80)
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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.

\(f(q)\) \(=\) \( q - \beta_{14} q^{3} + ( - \beta_{14} - \beta_{8} + \cdots - \beta_{2}) q^{7}+ \cdots + ( - \beta_{15} - \beta_{10} - \beta_{4} + 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{14} q^{3} + ( - \beta_{14} - \beta_{8} + \cdots - \beta_{2}) q^{7}+ \cdots + ( - \beta_{13} - 2 \beta_{12} + \cdots + 6) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 8 q^{11} - 8 q^{19} - 16 q^{21} + 16 q^{29} - 16 q^{31} - 16 q^{49} + 16 q^{51} - 24 q^{59} - 32 q^{69} + 16 q^{79} - 16 q^{81} + 16 q^{91} + 88 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 2x^{14} - 2x^{12} + 4x^{10} + 4x^{8} + 16x^{6} - 32x^{4} - 128x^{2} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{15} + 2\nu^{13} + 6\nu^{11} - 20\nu^{9} - 76\nu^{7} + 192\nu^{5} - 224\nu^{3} - 448\nu ) / 576 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{13} + \nu^{11} - 2\nu^{7} + 8\nu^{5} - 36\nu^{3} + 48\nu ) / 48 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{15} - \nu^{13} + 6\nu^{11} - 2\nu^{9} + 20\nu^{7} + 12\nu^{5} - 8\nu^{3} + 224\nu ) / 288 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{14} + 2\nu^{12} + 6\nu^{10} + 4\nu^{8} - 28\nu^{6} + 48\nu^{4} - 32\nu^{2} + 80 ) / 144 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -2\nu^{15} - \nu^{13} - 2\nu^{9} + 32\nu^{7} + 36\nu^{5} - 104\nu^{3} + 32\nu ) / 288 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -\nu^{15} + 2\nu^{13} + 2\nu^{11} + 12\nu^{9} - 4\nu^{7} + 16\nu^{5} - 32\nu^{3} + 320\nu ) / 192 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( \nu^{14} + 6\nu^{12} + 6\nu^{10} - 28\nu^{8} + 20\nu^{6} + 144\nu^{4} + 192\nu^{2} - 128 ) / 192 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -\nu^{15} + \nu^{13} + 3\nu^{11} + 8\nu^{9} + 10\nu^{7} - 48\nu^{5} - 52\nu^{3} + 160\nu ) / 144 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -5\nu^{14} + 2\nu^{12} + 18\nu^{10} - 20\nu^{8} - 4\nu^{6} - 144\nu^{4} - 128\nu^{2} + 704 ) / 576 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( -\nu^{14} - 2\nu^{10} + 4\nu^{6} + 8\nu^{4} - 32\nu^{2} + 32 ) / 96 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( \nu^{15} - 2\nu^{13} + 2\nu^{11} + 4\nu^{9} - 4\nu^{7} + 16\nu^{5} + 16\nu^{3} - 96\nu ) / 96 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( -3\nu^{14} + 2\nu^{12} + 6\nu^{10} + 12\nu^{8} + 20\nu^{6} - 96\nu^{4} + 320 ) / 192 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -2\nu^{14} + 5\nu^{12} + 6\nu^{10} - 2\nu^{8} - 76\nu^{6} - 60\nu^{4} + 256\nu^{2} + 368 ) / 144 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( -5\nu^{15} + 2\nu^{13} + 12\nu^{11} - 8\nu^{9} + 8\nu^{7} - 120\nu^{5} + 40\nu^{3} + 512\nu ) / 288 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 5\nu^{14} + 10\nu^{12} - 18\nu^{10} - 4\nu^{8} + 4\nu^{6} + 224\nu^{2} - 320 ) / 288 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{11} - \beta_{8} + \beta_{6} - \beta_{5} + \beta_{3} + \beta_{2} - \beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{15} + \beta_{13} + \beta_{12} - 2\beta_{10} - 4\beta_{9} + \beta_{7} - 2\beta_{4} + 2 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{14} + \beta_{11} - 2\beta_{8} + \beta_{6} - \beta_{2} - \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -\beta_{15} + 2\beta_{10} - 3\beta_{9} + \beta_{7} + \beta_{4} + 2 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( \beta_{11} - 3\beta_{8} + 3\beta_{6} + 3\beta_{5} + \beta_{3} - \beta_{2} + \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -\beta_{13} + 2\beta_{12} - \beta_{10} - \beta_{9} + \beta_{7} - \beta_{4} + 2 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( -\beta_{14} + \beta_{8} - \beta_{6} + 4\beta_{5} + 4\beta_{3} - 2\beta_{2} - \beta_1 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( -\beta_{15} + 6\beta_{12} - 11\beta_{9} - \beta_{7} + 3\beta_{4} \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( -2\beta_{14} + 6\beta_{11} + 4\beta_{8} + 6\beta_{6} + 2\beta_{5} - 6\beta_{3} - 2\beta_{2} - 2\beta_1 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( -5\beta_{15} - \beta_{13} + 5\beta_{12} - 12\beta_{10} + 2\beta_{9} + 3\beta_{7} + 4\beta_{4} - 10 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( 8\beta_{14} + 12\beta_{11} + 8\beta_{8} - 2\beta_{6} + 2\beta_{5} + 14\beta_{3} - 8\beta_{2} + 14\beta_1 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( 18\beta_{15} - 2\beta_{13} + 10\beta_{12} + 16\beta_{10} + 16\beta_{9} + 2\beta_{7} + 16\beta_{4} - 24 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( -8\beta_{14} - 14\beta_{11} + 18\beta_{8} + 6\beta_{6} - 6\beta_{5} + 22\beta_{3} - 26\beta_{2} + 26\beta_1 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( 14\beta_{15} - 10\beta_{13} - 10\beta_{12} - 52\beta_{10} + 12\beta_{9} - 6\beta_{7} + 8\beta_{4} + 52 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( -36\beta_{14} - 20\beta_{11} + 24\beta_{8} - 20\beta_{6} - 56\beta_{5} + 72\beta_{3} + 4\beta_{2} + 4\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1600\mathbb{Z}\right)^\times\).

\(n\) \(577\) \(901\) \(1151\)
\(\chi(n)\) \(1\) \(-\beta_{9}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
401.1
−0.238945 1.39388i
1.40501 0.161069i
0.841995 1.13624i
1.32661 0.490008i
−1.32661 + 0.490008i
−0.841995 + 1.13624i
−1.40501 + 0.161069i
0.238945 + 1.39388i
−0.238945 + 1.39388i
1.40501 + 0.161069i
0.841995 + 1.13624i
1.32661 + 0.490008i
−1.32661 0.490008i
−0.841995 1.13624i
−1.40501 0.161069i
0.238945 1.39388i
0 −1.99154 1.99154i 0 0 0 1.09033i 0 4.93244i 0
401.2 0 −1.86033 1.86033i 0 0 0 3.61392i 0 3.92163i 0
401.3 0 −0.734294 0.734294i 0 0 0 1.71452i 0 1.92163i 0
401.4 0 −0.183790 0.183790i 0 0 0 3.84853i 0 2.93244i 0
401.5 0 0.183790 + 0.183790i 0 0 0 3.84853i 0 2.93244i 0
401.6 0 0.734294 + 0.734294i 0 0 0 1.71452i 0 1.92163i 0
401.7 0 1.86033 + 1.86033i 0 0 0 3.61392i 0 3.92163i 0
401.8 0 1.99154 + 1.99154i 0 0 0 1.09033i 0 4.93244i 0
1201.1 0 −1.99154 + 1.99154i 0 0 0 1.09033i 0 4.93244i 0
1201.2 0 −1.86033 + 1.86033i 0 0 0 3.61392i 0 3.92163i 0
1201.3 0 −0.734294 + 0.734294i 0 0 0 1.71452i 0 1.92163i 0
1201.4 0 −0.183790 + 0.183790i 0 0 0 3.84853i 0 2.93244i 0
1201.5 0 0.183790 0.183790i 0 0 0 3.84853i 0 2.93244i 0
1201.6 0 0.734294 0.734294i 0 0 0 1.71452i 0 1.92163i 0
1201.7 0 1.86033 1.86033i 0 0 0 3.61392i 0 3.92163i 0
1201.8 0 1.99154 1.99154i 0 0 0 1.09033i 0 4.93244i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 401.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner
16.e even 4 1 inner
80.q even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1600.2.l.h 16
4.b odd 2 1 400.2.l.i 16
5.b even 2 1 inner 1600.2.l.h 16
5.c odd 4 2 320.2.q.c 16
16.e even 4 1 inner 1600.2.l.h 16
16.f odd 4 1 400.2.l.i 16
20.d odd 2 1 400.2.l.i 16
20.e even 4 2 80.2.q.c 16
40.i odd 4 2 640.2.q.f 16
40.k even 4 2 640.2.q.e 16
60.l odd 4 2 720.2.bm.f 16
80.i odd 4 1 320.2.q.c 16
80.i odd 4 1 640.2.q.f 16
80.j even 4 1 80.2.q.c 16
80.j even 4 1 640.2.q.e 16
80.k odd 4 1 400.2.l.i 16
80.q even 4 1 inner 1600.2.l.h 16
80.s even 4 1 80.2.q.c 16
80.s even 4 1 640.2.q.e 16
80.t odd 4 1 320.2.q.c 16
80.t odd 4 1 640.2.q.f 16
240.z odd 4 1 720.2.bm.f 16
240.bd odd 4 1 720.2.bm.f 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
80.2.q.c 16 20.e even 4 2
80.2.q.c 16 80.j even 4 1
80.2.q.c 16 80.s even 4 1
320.2.q.c 16 5.c odd 4 2
320.2.q.c 16 80.i odd 4 1
320.2.q.c 16 80.t odd 4 1
400.2.l.i 16 4.b odd 2 1
400.2.l.i 16 16.f odd 4 1
400.2.l.i 16 20.d odd 2 1
400.2.l.i 16 80.k odd 4 1
640.2.q.e 16 40.k even 4 2
640.2.q.e 16 80.j even 4 1
640.2.q.e 16 80.s even 4 1
640.2.q.f 16 40.i odd 4 2
640.2.q.f 16 80.i odd 4 1
640.2.q.f 16 80.t odd 4 1
720.2.bm.f 16 60.l odd 4 2
720.2.bm.f 16 240.z odd 4 1
720.2.bm.f 16 240.bd odd 4 1
1600.2.l.h 16 1.a even 1 1 trivial
1600.2.l.h 16 5.b even 2 1 inner
1600.2.l.h 16 16.e even 4 1 inner
1600.2.l.h 16 80.q even 4 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1600, [\chi])\):

\( T_{3}^{16} + 112T_{3}^{12} + 3144T_{3}^{8} + 3520T_{3}^{4} + 16 \) Copy content Toggle raw display
\( T_{7}^{8} + 32T_{7}^{6} + 312T_{7}^{4} + 896T_{7}^{2} + 676 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( T^{16} + 112 T^{12} + \cdots + 16 \) Copy content Toggle raw display
$5$ \( T^{16} \) Copy content Toggle raw display
$7$ \( (T^{8} + 32 T^{6} + \cdots + 676)^{2} \) Copy content Toggle raw display
$11$ \( (T^{8} + 4 T^{7} + 8 T^{6} + \cdots + 16)^{2} \) Copy content Toggle raw display
$13$ \( (T^{8} + 224 T^{4} + 7744)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} - 28 T^{2} + 88)^{4} \) Copy content Toggle raw display
$19$ \( (T^{8} + 4 T^{7} + \cdots + 59536)^{2} \) Copy content Toggle raw display
$23$ \( (T^{8} + 32 T^{6} + 168 T^{4} + \cdots + 4)^{2} \) Copy content Toggle raw display
$29$ \( (T^{8} - 8 T^{7} + \cdots + 2704)^{2} \) Copy content Toggle raw display
$31$ \( (T^{4} + 4 T^{3} + \cdots + 208)^{4} \) Copy content Toggle raw display
$37$ \( (T^{8} + 1536 T^{4} + 147456)^{2} \) Copy content Toggle raw display
$41$ \( (T^{8} + 192 T^{6} + \cdots + 219024)^{2} \) Copy content Toggle raw display
$43$ \( T^{16} + \cdots + 9721171216 \) Copy content Toggle raw display
$47$ \( (T^{8} - 80 T^{6} + \cdots + 27556)^{2} \) Copy content Toggle raw display
$53$ \( T^{16} + 4672 T^{12} + \cdots + 4096 \) Copy content Toggle raw display
$59$ \( (T^{8} + 12 T^{7} + \cdots + 144)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 576)^{4} \) Copy content Toggle raw display
$67$ \( T^{16} + \cdots + 36804120336 \) Copy content Toggle raw display
$71$ \( (T^{8} + 256 T^{6} + \cdots + 65536)^{2} \) Copy content Toggle raw display
$73$ \( (T^{8} + 456 T^{6} + \cdots + 48776256)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} - 4 T^{3} + \cdots - 368)^{4} \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 14\!\cdots\!16 \) Copy content Toggle raw display
$89$ \( (T^{8} + 208 T^{6} + \cdots + 135424)^{2} \) Copy content Toggle raw display
$97$ \( (T^{8} - 200 T^{6} + \cdots + 2383936)^{2} \) Copy content Toggle raw display
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