Properties

Label 770.2.n.b
Level $770$
Weight $2$
Character orbit 770.n
Analytic conductor $6.148$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [770,2,Mod(71,770)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(770, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([0, 0, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("770.71");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 770 = 2 \cdot 5 \cdot 7 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 770.n (of order \(5\), degree \(4\), 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: \(6.14848095564\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{10})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{3} + x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{5}]$

$q$-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 primitive root of unity \(\zeta_{10}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \zeta_{10}^{3} + \zeta_{10}^{2} + \cdots + 1) q^{2}+ \cdots + ( - \zeta_{10}^{3} - 2 \zeta_{10}^{2} + \cdots + 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \zeta_{10}^{3} + \zeta_{10}^{2} + \cdots + 1) q^{2}+ \cdots + ( - 4 \zeta_{10}^{3} + 9 \zeta_{10}^{2} + \cdots - 1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + q^{2} - 4 q^{3} - q^{4} + q^{5} - q^{6} + q^{7} + q^{8} + 7 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + q^{2} - 4 q^{3} - q^{4} + q^{5} - q^{6} + q^{7} + q^{8} + 7 q^{9} + 4 q^{10} - q^{11} + 6 q^{12} + 2 q^{13} - q^{14} + 4 q^{15} - q^{16} + 2 q^{17} + 8 q^{18} + 11 q^{19} + q^{20} - 6 q^{21} + 11 q^{22} + 24 q^{23} - q^{24} - q^{25} - 2 q^{26} + 5 q^{27} + q^{28} + 6 q^{29} - 4 q^{30} - 6 q^{31} - 4 q^{32} + 11 q^{33} - 2 q^{34} - q^{35} - 8 q^{36} + 12 q^{37} + 4 q^{38} - 2 q^{39} - q^{40} - 20 q^{41} + q^{42} + 6 q^{43} + 4 q^{44} - 2 q^{45} + 6 q^{46} - 12 q^{47} - 4 q^{48} - q^{49} + q^{50} - 7 q^{51} + 2 q^{52} + 6 q^{53} - 9 q^{55} + 4 q^{56} - 11 q^{57} - 6 q^{58} + 9 q^{59} - q^{60} - 18 q^{61} - 4 q^{62} + 8 q^{63} - q^{64} + 8 q^{65} - 16 q^{66} + 2 q^{67} + 2 q^{68} - 24 q^{69} + q^{70} - 12 q^{71} - 7 q^{72} + 18 q^{73} - 12 q^{74} + q^{75} - 14 q^{76} - 4 q^{77} + 12 q^{78} + 6 q^{79} + q^{80} + 14 q^{81} - 15 q^{82} - 15 q^{83} + 4 q^{84} + 3 q^{85} + 9 q^{86} - 16 q^{87} + q^{88} + 30 q^{89} + 7 q^{90} - 2 q^{91} - 6 q^{92} - 4 q^{93} + 2 q^{94} - 11 q^{95} + 4 q^{96} - 23 q^{97} - 4 q^{98} - 13 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/770\mathbb{Z}\right)^\times\).

\(n\) \(211\) \(617\) \(661\)
\(\chi(n)\) \(-\zeta_{10}^{3}\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
71.1
−0.309017 + 0.951057i
−0.309017 0.951057i
0.809017 + 0.587785i
0.809017 0.587785i
−0.309017 0.951057i −2.11803 1.53884i −0.809017 + 0.587785i −0.309017 + 0.951057i −0.809017 + 2.48990i 0.809017 0.587785i 0.809017 + 0.587785i 1.19098 + 3.66547i 1.00000
141.1 −0.309017 + 0.951057i −2.11803 + 1.53884i −0.809017 0.587785i −0.309017 0.951057i −0.809017 2.48990i 0.809017 + 0.587785i 0.809017 0.587785i 1.19098 3.66547i 1.00000
421.1 0.809017 0.587785i 0.118034 + 0.363271i 0.309017 0.951057i 0.809017 + 0.587785i 0.309017 + 0.224514i −0.309017 + 0.951057i −0.309017 0.951057i 2.30902 1.67760i 1.00000
631.1 0.809017 + 0.587785i 0.118034 0.363271i 0.309017 + 0.951057i 0.809017 0.587785i 0.309017 0.224514i −0.309017 0.951057i −0.309017 + 0.951057i 2.30902 + 1.67760i 1.00000
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
11.c even 5 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 770.2.n.b 4
11.c even 5 1 inner 770.2.n.b 4
11.c even 5 1 8470.2.a.bt 2
11.d odd 10 1 8470.2.a.cf 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
770.2.n.b 4 1.a even 1 1 trivial
770.2.n.b 4 11.c even 5 1 inner
8470.2.a.bt 2 11.c even 5 1
8470.2.a.cf 2 11.d odd 10 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{4} + 4T_{3}^{3} + 6T_{3}^{2} - T_{3} + 1 \) acting on \(S_{2}^{\mathrm{new}}(770, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} - T^{3} + T^{2} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{4} + 4 T^{3} + \cdots + 1 \) Copy content Toggle raw display
$5$ \( T^{4} - T^{3} + T^{2} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( T^{4} - T^{3} + T^{2} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{4} + T^{3} + \cdots + 121 \) Copy content Toggle raw display
$13$ \( T^{4} - 2 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$17$ \( T^{4} - 2 T^{3} + \cdots + 1 \) Copy content Toggle raw display
$19$ \( T^{4} - 11 T^{3} + \cdots + 1 \) Copy content Toggle raw display
$23$ \( (T - 6)^{4} \) Copy content Toggle raw display
$29$ \( T^{4} - 6 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$31$ \( T^{4} + 6 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$37$ \( T^{4} - 12 T^{3} + \cdots + 256 \) Copy content Toggle raw display
$41$ \( T^{4} + 20 T^{3} + \cdots + 3025 \) Copy content Toggle raw display
$43$ \( (T^{2} - 3 T - 9)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + 12 T^{3} + \cdots + 1936 \) Copy content Toggle raw display
$53$ \( T^{4} - 6 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$59$ \( T^{4} - 9 T^{3} + \cdots + 1681 \) Copy content Toggle raw display
$61$ \( T^{4} + 18 T^{3} + \cdots + 1936 \) Copy content Toggle raw display
$67$ \( (T^{2} - T - 31)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} + 12 T^{3} + \cdots + 1296 \) Copy content Toggle raw display
$73$ \( T^{4} - 18 T^{3} + \cdots + 9801 \) Copy content Toggle raw display
$79$ \( T^{4} - 6 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$83$ \( T^{4} + 15 T^{3} + \cdots + 3025 \) Copy content Toggle raw display
$89$ \( (T^{2} - 15 T + 25)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + 23 T^{3} + \cdots + 10201 \) Copy content Toggle raw display
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