Properties

Label 104.2.e.b
Level $104$
Weight $2$
Character orbit 104.e
Analytic conductor $0.830$
Analytic rank $0$
Dimension $2$
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [104,2,Mod(77,104)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(104, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("104.77");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 104 = 2^{3} \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 104.e (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: \(0.830444181021\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
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 \(i = \sqrt{-1}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (i + 1) q^{2} + i q^{3} + 2 i q^{4} - q^{5} + (i - 1) q^{6} - 3 i q^{7} + (2 i - 2) q^{8} + 2 q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + (i + 1) q^{2} + i q^{3} + 2 i q^{4} - q^{5} + (i - 1) q^{6} - 3 i q^{7} + (2 i - 2) q^{8} + 2 q^{9} + ( - i - 1) q^{10} - 2 q^{11} - 2 q^{12} + ( - 2 i + 3) q^{13} + ( - 3 i + 3) q^{14} - i q^{15} - 4 q^{16} + 3 q^{17} + (2 i + 2) q^{18} - 2 i q^{20} + 3 q^{21} + ( - 2 i - 2) q^{22} - 6 q^{23} + ( - 2 i - 2) q^{24} - 4 q^{25} + (i + 5) q^{26} + 5 i q^{27} + 6 q^{28} - 6 i q^{29} + ( - i + 1) q^{30} + ( - 4 i - 4) q^{32} - 2 i q^{33} + (3 i + 3) q^{34} + 3 i q^{35} + 4 i q^{36} - 3 q^{37} + (3 i + 2) q^{39} + ( - 2 i + 2) q^{40} + 10 i q^{41} + (3 i + 3) q^{42} - 9 i q^{43} - 4 i q^{44} - 2 q^{45} + ( - 6 i - 6) q^{46} + 7 i q^{47} - 4 i q^{48} - 2 q^{49} + ( - 4 i - 4) q^{50} + 3 i q^{51} + (6 i + 4) q^{52} + 6 i q^{53} + (5 i - 5) q^{54} + 2 q^{55} + (6 i + 6) q^{56} + ( - 6 i + 6) q^{58} - 10 q^{59} + 2 q^{60} + 10 i q^{61} - 6 i q^{63} - 8 i q^{64} + (2 i - 3) q^{65} + ( - 2 i + 2) q^{66} + 12 q^{67} + 6 i q^{68} - 6 i q^{69} + (3 i - 3) q^{70} + 5 i q^{71} + (4 i - 4) q^{72} - 6 i q^{73} + ( - 3 i - 3) q^{74} - 4 i q^{75} + 6 i q^{77} + (5 i - 1) q^{78} + 4 q^{80} + q^{81} + (10 i - 10) q^{82} + 16 q^{83} + 6 i q^{84} - 3 q^{85} + ( - 9 i + 9) q^{86} + 6 q^{87} + ( - 4 i + 4) q^{88} - 4 i q^{89} + ( - 2 i - 2) q^{90} + ( - 9 i - 6) q^{91} - 12 i q^{92} + (7 i - 7) q^{94} + ( - 4 i + 4) q^{96} - 18 i q^{97} + ( - 2 i - 2) q^{98} - 4 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 2 q^{2} - 2 q^{5} - 2 q^{6} - 4 q^{8} + 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 2 q^{2} - 2 q^{5} - 2 q^{6} - 4 q^{8} + 4 q^{9} - 2 q^{10} - 4 q^{11} - 4 q^{12} + 6 q^{13} + 6 q^{14} - 8 q^{16} + 6 q^{17} + 4 q^{18} + 6 q^{21} - 4 q^{22} - 12 q^{23} - 4 q^{24} - 8 q^{25} + 10 q^{26} + 12 q^{28} + 2 q^{30} - 8 q^{32} + 6 q^{34} - 6 q^{37} + 4 q^{39} + 4 q^{40} + 6 q^{42} - 4 q^{45} - 12 q^{46} - 4 q^{49} - 8 q^{50} + 8 q^{52} - 10 q^{54} + 4 q^{55} + 12 q^{56} + 12 q^{58} - 20 q^{59} + 4 q^{60} - 6 q^{65} + 4 q^{66} + 24 q^{67} - 6 q^{70} - 8 q^{72} - 6 q^{74} - 2 q^{78} + 8 q^{80} + 2 q^{81} - 20 q^{82} + 32 q^{83} - 6 q^{85} + 18 q^{86} + 12 q^{87} + 8 q^{88} - 4 q^{90} - 12 q^{91} - 14 q^{94} + 8 q^{96} - 4 q^{98} - 8 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/104\mathbb{Z}\right)^\times\).

\(n\) \(41\) \(53\) \(79\)
\(\chi(n)\) \(-1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
77.1
1.00000i
1.00000i
1.00000 1.00000i 1.00000i 2.00000i −1.00000 −1.00000 1.00000i 3.00000i −2.00000 2.00000i 2.00000 −1.00000 + 1.00000i
77.2 1.00000 + 1.00000i 1.00000i 2.00000i −1.00000 −1.00000 + 1.00000i 3.00000i −2.00000 + 2.00000i 2.00000 −1.00000 1.00000i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
104.e even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 104.2.e.b yes 2
3.b odd 2 1 936.2.m.b 2
4.b odd 2 1 416.2.e.a 2
8.b even 2 1 104.2.e.a 2
8.d odd 2 1 416.2.e.b 2
12.b even 2 1 3744.2.m.c 2
13.b even 2 1 104.2.e.a 2
24.f even 2 1 3744.2.m.b 2
24.h odd 2 1 936.2.m.c 2
39.d odd 2 1 936.2.m.c 2
52.b odd 2 1 416.2.e.b 2
104.e even 2 1 inner 104.2.e.b yes 2
104.h odd 2 1 416.2.e.a 2
156.h even 2 1 3744.2.m.b 2
312.b odd 2 1 936.2.m.b 2
312.h even 2 1 3744.2.m.c 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
104.2.e.a 2 8.b even 2 1
104.2.e.a 2 13.b even 2 1
104.2.e.b yes 2 1.a even 1 1 trivial
104.2.e.b yes 2 104.e even 2 1 inner
416.2.e.a 2 4.b odd 2 1
416.2.e.a 2 104.h odd 2 1
416.2.e.b 2 8.d odd 2 1
416.2.e.b 2 52.b odd 2 1
936.2.m.b 2 3.b odd 2 1
936.2.m.b 2 312.b odd 2 1
936.2.m.c 2 24.h odd 2 1
936.2.m.c 2 39.d odd 2 1
3744.2.m.b 2 24.f even 2 1
3744.2.m.b 2 156.h even 2 1
3744.2.m.c 2 12.b even 2 1
3744.2.m.c 2 312.h even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(104, [\chi])\):

\( T_{3}^{2} + 1 \) Copy content Toggle raw display
\( T_{5} + 1 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} - 2T + 2 \) Copy content Toggle raw display
$3$ \( T^{2} + 1 \) Copy content Toggle raw display
$5$ \( (T + 1)^{2} \) Copy content Toggle raw display
$7$ \( T^{2} + 9 \) Copy content Toggle raw display
$11$ \( (T + 2)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} - 6T + 13 \) Copy content Toggle raw display
$17$ \( (T - 3)^{2} \) Copy content Toggle raw display
$19$ \( T^{2} \) Copy content Toggle raw display
$23$ \( (T + 6)^{2} \) Copy content Toggle raw display
$29$ \( T^{2} + 36 \) Copy content Toggle raw display
$31$ \( T^{2} \) Copy content Toggle raw display
$37$ \( (T + 3)^{2} \) Copy content Toggle raw display
$41$ \( T^{2} + 100 \) Copy content Toggle raw display
$43$ \( T^{2} + 81 \) Copy content Toggle raw display
$47$ \( T^{2} + 49 \) Copy content Toggle raw display
$53$ \( T^{2} + 36 \) Copy content Toggle raw display
$59$ \( (T + 10)^{2} \) Copy content Toggle raw display
$61$ \( T^{2} + 100 \) Copy content Toggle raw display
$67$ \( (T - 12)^{2} \) Copy content Toggle raw display
$71$ \( T^{2} + 25 \) Copy content Toggle raw display
$73$ \( T^{2} + 36 \) Copy content Toggle raw display
$79$ \( T^{2} \) Copy content Toggle raw display
$83$ \( (T - 16)^{2} \) Copy content Toggle raw display
$89$ \( T^{2} + 16 \) Copy content Toggle raw display
$97$ \( T^{2} + 324 \) Copy content Toggle raw display
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