Properties

Label 2400.4.a.ca
Level $2400$
Weight $4$
Character orbit 2400.a
Self dual yes
Analytic conductor $141.605$
Analytic rank $0$
Dimension $4$
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2400,4,Mod(1,2400)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2400, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 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("2400.1");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2400 = 2^{5} \cdot 3 \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 2400.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: \(141.604584014\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\sqrt{21}, \sqrt{141})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{3} - 61x^{2} + 154x + 28 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{6} \)
Twist minimal: no (minimal twist has level 480)
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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 3 q^{3} + (\beta_{3} - 15) q^{7} + 9 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + 3 q^{3} + (\beta_{3} - 15) q^{7} + 9 q^{9} + (\beta_{2} + 4 \beta_1) q^{11} + ( - 4 \beta_{2} + 5 \beta_1) q^{13} + ( - 3 \beta_{2} + 4 \beta_1) q^{17} + (6 \beta_{2} - 2 \beta_1) q^{19} + (3 \beta_{3} - 45) q^{21} - 100 q^{23} + 27 q^{27} + ( - 3 \beta_{3} - 21) q^{29} + (6 \beta_{2} + 8 \beta_1) q^{31} + (3 \beta_{2} + 12 \beta_1) q^{33} + ( - 16 \beta_{2} - \beta_1) q^{37} + ( - 12 \beta_{2} + 15 \beta_1) q^{39} + (10 \beta_{3} + 312) q^{41} + (20 \beta_{3} - 48) q^{43} + (18 \beta_{3} + 110) q^{47} + ( - 30 \beta_{3} + 211) q^{49} + ( - 9 \beta_{2} + 12 \beta_1) q^{51} - 17 \beta_1 q^{53} + (18 \beta_{2} - 6 \beta_1) q^{57} + (\beta_{2} - 8 \beta_1) q^{59} + (24 \beta_{3} + 138) q^{61} + (9 \beta_{3} - 135) q^{63} + ( - 22 \beta_{3} + 102) q^{67} - 300 q^{69} + ( - 14 \beta_{2} + 16 \beta_1) q^{71} + (18 \beta_{2} + 48 \beta_1) q^{73} + (42 \beta_{2} - 124 \beta_1) q^{77} + ( - 6 \beta_{2} - 8 \beta_1) q^{79} + 81 q^{81} + (12 \beta_{3} + 152) q^{83} + ( - 9 \beta_{3} - 63) q^{87} + ( - 24 \beta_{3} + 78) q^{89} + (42 \beta_{2} - 176 \beta_1) q^{91} + (18 \beta_{2} + 24 \beta_1) q^{93} + (38 \beta_{2} - 46 \beta_1) q^{97} + (9 \beta_{2} + 36 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 12 q^{3} - 60 q^{7} + 36 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + 12 q^{3} - 60 q^{7} + 36 q^{9} - 180 q^{21} - 400 q^{23} + 108 q^{27} - 84 q^{29} + 1248 q^{41} - 192 q^{43} + 440 q^{47} + 844 q^{49} + 552 q^{61} - 540 q^{63} + 408 q^{67} - 1200 q^{69} + 324 q^{81} + 608 q^{83} - 252 q^{87} + 312 q^{89}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - x^{3} - 61x^{2} + 154x + 28 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -2\nu^{3} + 100\nu - 164 ) / 11 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -14\nu^{3} - 44\nu^{2} + 656\nu + 216 ) / 55 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -2\nu^{3} + 144\nu - 175 ) / 11 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{3} - \beta _1 + 1 ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{3} - 5\beta_{2} + 8\beta _1 + 123 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 25\beta_{3} - 36\beta _1 - 139 ) / 2 \) Copy content Toggle raw display

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
−0.170360
−8.39882
6.60753
2.96165
0 3.00000 0 0 0 −33.1384 0 9.00000 0
1.2 0 3.00000 0 0 0 −33.1384 0 9.00000 0
1.3 0 3.00000 0 0 0 3.13836 0 9.00000 0
1.4 0 3.00000 0 0 0 3.13836 0 9.00000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( +1 \)
\(3\) \( -1 \)
\(5\) \( -1 \)

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
20.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2400.4.a.ca 4
4.b odd 2 1 2400.4.a.bz 4
5.b even 2 1 2400.4.a.bz 4
5.c odd 4 2 480.4.f.f 8
15.e even 4 2 1440.4.f.m 8
20.d odd 2 1 inner 2400.4.a.ca 4
20.e even 4 2 480.4.f.f 8
40.i odd 4 2 960.4.f.u 8
40.k even 4 2 960.4.f.u 8
60.l odd 4 2 1440.4.f.m 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
480.4.f.f 8 5.c odd 4 2
480.4.f.f 8 20.e even 4 2
960.4.f.u 8 40.i odd 4 2
960.4.f.u 8 40.k even 4 2
1440.4.f.m 8 15.e even 4 2
1440.4.f.m 8 60.l odd 4 2
2400.4.a.bz 4 4.b odd 2 1
2400.4.a.bz 4 5.b even 2 1
2400.4.a.ca 4 1.a even 1 1 trivial
2400.4.a.ca 4 20.d 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 \(S_{4}^{\mathrm{new}}(\Gamma_0(2400))\):

\( T_{7}^{2} + 30T_{7} - 104 \) Copy content Toggle raw display
\( T_{11}^{4} - 7092T_{11}^{2} + 12278016 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( (T - 3)^{4} \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( (T^{2} + 30 T - 104)^{2} \) Copy content Toggle raw display
$11$ \( T^{4} - 7092 T^{2} + 12278016 \) Copy content Toggle raw display
$13$ \( T^{4} - 12420 T^{2} + 35141184 \) Copy content Toggle raw display
$17$ \( T^{4} - 7380 T^{2} + 11614464 \) Copy content Toggle raw display
$19$ \( T^{4} - 21312 T^{2} + 37748736 \) Copy content Toggle raw display
$23$ \( (T + 100)^{4} \) Copy content Toggle raw display
$29$ \( (T^{2} + 42 T - 2520)^{2} \) Copy content Toggle raw display
$31$ \( T^{4} - 59472 T^{2} + 652087296 \) Copy content Toggle raw display
$37$ \( T^{4} - 174276 T^{2} + 31809600 \) Copy content Toggle raw display
$41$ \( (T^{2} - 624 T + 64444)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 96 T - 129296)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} - 220 T - 94496)^{2} \) Copy content Toggle raw display
$53$ \( T^{4} + \cdots + 1202702400 \) Copy content Toggle raw display
$59$ \( T^{4} - 18900 T^{2} + 19079424 \) Copy content Toggle raw display
$61$ \( (T^{2} - 276 T - 170460)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} - 204 T - 148832)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} + \cdots + 4911206400 \) Copy content Toggle raw display
$73$ \( T^{4} + \cdots + 376308633600 \) Copy content Toggle raw display
$79$ \( T^{4} - 59472 T^{2} + 652087296 \) Copy content Toggle raw display
$83$ \( (T^{2} - 304 T - 24272)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} - 156 T - 183420)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + \cdots + 279392587776 \) Copy content Toggle raw display
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