Properties

Label 1856.4.a.j
Level $1856$
Weight $4$
Character orbit 1856.a
Self dual yes
Analytic conductor $109.508$
Analytic rank $1$
Dimension $2$
CM no
Inner twists $1$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1856,4,Mod(1,1856)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1856, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([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("1856.1");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1856 = 2^{6} \cdot 29 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1856.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: \(109.507544971\)
Analytic rank: \(1\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{13}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x - 3 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 116)
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 \(\beta = \sqrt{13}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta q^{3} + (2 \beta + 5) q^{5} + ( - 4 \beta - 10) q^{7} - 14 q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \beta q^{3} + (2 \beta + 5) q^{5} + ( - 4 \beta - 10) q^{7} - 14 q^{9} + (\beta + 16) q^{11} + ( - 6 \beta + 27) q^{13} + ( - 5 \beta - 26) q^{15} + (22 \beta - 22) q^{17} + ( - 12 \beta + 16) q^{19} + (10 \beta + 52) q^{21} + ( - 10 \beta - 18) q^{23} + (20 \beta - 48) q^{25} + 41 \beta q^{27} + 29 q^{29} + ( - 3 \beta + 10) q^{31} + ( - 16 \beta - 13) q^{33} + ( - 40 \beta - 154) q^{35} + (48 \beta + 72) q^{37} + ( - 27 \beta + 78) q^{39} + (2 \beta + 48) q^{41} + (9 \beta - 120) q^{43} + ( - 28 \beta - 70) q^{45} + (49 \beta + 298) q^{47} + (80 \beta - 35) q^{49} + (22 \beta - 286) q^{51} + (54 \beta + 17) q^{53} + (37 \beta + 106) q^{55} + ( - 16 \beta + 156) q^{57} + ( - 70 \beta - 362) q^{59} + (102 \beta + 306) q^{61} + (56 \beta + 140) q^{63} + (24 \beta - 21) q^{65} + ( - 204 \beta - 264) q^{67} + (18 \beta + 130) q^{69} + ( - 166 \beta - 52) q^{71} + ( - 168 \beta - 436) q^{73} + (48 \beta - 260) q^{75} + ( - 74 \beta - 212) q^{77} + ( - 165 \beta - 410) q^{79} - 155 q^{81} + (90 \beta + 114) q^{83} + (66 \beta + 462) q^{85} - 29 \beta q^{87} + (382 \beta - 16) q^{89} + ( - 48 \beta + 42) q^{91} + ( - 10 \beta + 39) q^{93} + ( - 28 \beta - 232) q^{95} + (42 \beta - 948) q^{97} + ( - 14 \beta - 224) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 10 q^{5} - 20 q^{7} - 28 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 10 q^{5} - 20 q^{7} - 28 q^{9} + 32 q^{11} + 54 q^{13} - 52 q^{15} - 44 q^{17} + 32 q^{19} + 104 q^{21} - 36 q^{23} - 96 q^{25} + 58 q^{29} + 20 q^{31} - 26 q^{33} - 308 q^{35} + 144 q^{37} + 156 q^{39} + 96 q^{41} - 240 q^{43} - 140 q^{45} + 596 q^{47} - 70 q^{49} - 572 q^{51} + 34 q^{53} + 212 q^{55} + 312 q^{57} - 724 q^{59} + 612 q^{61} + 280 q^{63} - 42 q^{65} - 528 q^{67} + 260 q^{69} - 104 q^{71} - 872 q^{73} - 520 q^{75} - 424 q^{77} - 820 q^{79} - 310 q^{81} + 228 q^{83} + 924 q^{85} - 32 q^{89} + 84 q^{91} + 78 q^{93} - 464 q^{95} - 1896 q^{97} - 448 q^{99}+O(q^{100}) \) 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
2.30278
−1.30278
0 −3.60555 0 12.2111 0 −24.4222 0 −14.0000 0
1.2 0 3.60555 0 −2.21110 0 4.42221 0 −14.0000 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \(1\)
\(29\) \(-1\)

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 1856.4.a.j 2
4.b odd 2 1 1856.4.a.k 2
8.b even 2 1 116.4.a.a 2
8.d odd 2 1 464.4.a.d 2
24.h odd 2 1 1044.4.a.d 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
116.4.a.a 2 8.b even 2 1
464.4.a.d 2 8.d odd 2 1
1044.4.a.d 2 24.h odd 2 1
1856.4.a.j 2 1.a even 1 1 trivial
1856.4.a.k 2 4.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 \(S_{4}^{\mathrm{new}}(\Gamma_0(1856))\):

\( T_{3}^{2} - 13 \) Copy content Toggle raw display
\( T_{5}^{2} - 10T_{5} - 27 \) Copy content Toggle raw display
\( T_{7}^{2} + 20T_{7} - 108 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} - 13 \) Copy content Toggle raw display
$5$ \( T^{2} - 10T - 27 \) Copy content Toggle raw display
$7$ \( T^{2} + 20T - 108 \) Copy content Toggle raw display
$11$ \( T^{2} - 32T + 243 \) Copy content Toggle raw display
$13$ \( T^{2} - 54T + 261 \) Copy content Toggle raw display
$17$ \( T^{2} + 44T - 5808 \) Copy content Toggle raw display
$19$ \( T^{2} - 32T - 1616 \) Copy content Toggle raw display
$23$ \( T^{2} + 36T - 976 \) Copy content Toggle raw display
$29$ \( (T - 29)^{2} \) Copy content Toggle raw display
$31$ \( T^{2} - 20T - 17 \) Copy content Toggle raw display
$37$ \( T^{2} - 144T - 24768 \) Copy content Toggle raw display
$41$ \( T^{2} - 96T + 2252 \) Copy content Toggle raw display
$43$ \( T^{2} + 240T + 13347 \) Copy content Toggle raw display
$47$ \( T^{2} - 596T + 57591 \) Copy content Toggle raw display
$53$ \( T^{2} - 34T - 37619 \) Copy content Toggle raw display
$59$ \( T^{2} + 724T + 67344 \) Copy content Toggle raw display
$61$ \( T^{2} - 612T - 41616 \) Copy content Toggle raw display
$67$ \( T^{2} + 528T - 471312 \) Copy content Toggle raw display
$71$ \( T^{2} + 104T - 355524 \) Copy content Toggle raw display
$73$ \( T^{2} + 872T - 176816 \) Copy content Toggle raw display
$79$ \( T^{2} + 820T - 185825 \) Copy content Toggle raw display
$83$ \( T^{2} - 228T - 92304 \) Copy content Toggle raw display
$89$ \( T^{2} + 32T - 1896756 \) Copy content Toggle raw display
$97$ \( T^{2} + 1896 T + 875772 \) Copy content Toggle raw display
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