Properties

Label 66.2.e.a
Level $66$
Weight $2$
Character orbit 66.e
Analytic conductor $0.527$
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] = [66,2,Mod(25,66)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(66, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([0, 8]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("66.25");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 66 = 2 \cdot 3 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 66.e (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: \(0.527012653340\)
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.

\(f(q)\) \(=\) \( q - \zeta_{10} q^{2} + \zeta_{10}^{3} q^{3} + \zeta_{10}^{2} q^{4} + ( - 2 \zeta_{10}^{3} - \zeta_{10}^{2} + \cdots + 2) q^{5} + \cdots - \zeta_{10} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{10} q^{2} + \zeta_{10}^{3} q^{3} + \zeta_{10}^{2} q^{4} + ( - 2 \zeta_{10}^{3} - \zeta_{10}^{2} + \cdots + 2) q^{5} + \cdots + (2 \zeta_{10}^{3} + \zeta_{10} + 2) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - q^{2} + q^{3} - q^{4} + 8 q^{5} + q^{6} - 6 q^{7} - q^{8} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - q^{2} + q^{3} - q^{4} + 8 q^{5} + q^{6} - 6 q^{7} - q^{8} - q^{9} - 2 q^{10} - 4 q^{11} - 4 q^{12} - 4 q^{13} - 6 q^{14} + 7 q^{15} - q^{16} - 12 q^{17} - q^{18} + 6 q^{19} + 8 q^{20} - 14 q^{21} + 11 q^{22} - 4 q^{23} + q^{24} + q^{25} + 6 q^{26} + q^{27} - q^{28} - q^{29} + 7 q^{30} - 5 q^{31} + 4 q^{32} + 9 q^{33} + 8 q^{34} + 23 q^{35} - q^{36} + 4 q^{37} - 4 q^{38} + 4 q^{39} - 7 q^{40} + 6 q^{41} + q^{42} - 4 q^{43} + q^{44} - 2 q^{45} - 4 q^{46} - 8 q^{47} + q^{48} + 11 q^{49} - 14 q^{50} - 8 q^{51} + 6 q^{52} - 7 q^{53} - 4 q^{54} - 38 q^{55} + 14 q^{56} + 4 q^{57} - q^{58} + 8 q^{59} - 8 q^{60} + 14 q^{61} - 10 q^{62} - 6 q^{63} - q^{64} - 28 q^{65} - q^{66} + 16 q^{67} - 12 q^{68} - 6 q^{69} - 27 q^{70} + 2 q^{71} - q^{72} + 21 q^{73} + 4 q^{74} + 14 q^{75} - 4 q^{76} + 6 q^{77} + 4 q^{78} - 16 q^{79} - 7 q^{80} - q^{81} - 4 q^{82} + 26 q^{83} + 6 q^{84} - 4 q^{85} - 4 q^{86} + 6 q^{87} - 9 q^{88} - 20 q^{89} + 8 q^{90} + 26 q^{91} + 6 q^{92} + 5 q^{93} + 12 q^{94} + 12 q^{95} + q^{96} + 14 q^{97} + 26 q^{98} + 11 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/66\mathbb{Z}\right)^\times\).

\(n\) \(13\) \(23\)
\(\chi(n)\) \(\zeta_{10}^{2}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
25.1
0.809017 0.587785i
−0.309017 + 0.951057i
0.809017 + 0.587785i
−0.309017 0.951057i
−0.809017 + 0.587785i −0.309017 0.951057i 0.309017 0.951057i 3.11803 + 2.26538i 0.809017 + 0.587785i 0.736068 2.26538i 0.309017 + 0.951057i −0.809017 + 0.587785i −3.85410
31.1 0.309017 0.951057i 0.809017 0.587785i −0.809017 0.587785i 0.881966 + 2.71441i −0.309017 0.951057i −3.73607 2.71441i −0.809017 + 0.587785i 0.309017 0.951057i 2.85410
37.1 −0.809017 0.587785i −0.309017 + 0.951057i 0.309017 + 0.951057i 3.11803 2.26538i 0.809017 0.587785i 0.736068 + 2.26538i 0.309017 0.951057i −0.809017 0.587785i −3.85410
49.1 0.309017 + 0.951057i 0.809017 + 0.587785i −0.809017 + 0.587785i 0.881966 2.71441i −0.309017 + 0.951057i −3.73607 + 2.71441i −0.809017 0.587785i 0.309017 + 0.951057i 2.85410
\(n\): 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 66.2.e.a 4
3.b odd 2 1 198.2.f.c 4
4.b odd 2 1 528.2.y.d 4
11.b odd 2 1 726.2.e.r 4
11.c even 5 1 inner 66.2.e.a 4
11.c even 5 1 726.2.a.l 2
11.c even 5 2 726.2.e.f 4
11.d odd 10 1 726.2.a.j 2
11.d odd 10 2 726.2.e.n 4
11.d odd 10 1 726.2.e.r 4
33.f even 10 1 2178.2.a.bb 2
33.h odd 10 1 198.2.f.c 4
33.h odd 10 1 2178.2.a.t 2
44.g even 10 1 5808.2.a.cg 2
44.h odd 10 1 528.2.y.d 4
44.h odd 10 1 5808.2.a.cb 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
66.2.e.a 4 1.a even 1 1 trivial
66.2.e.a 4 11.c even 5 1 inner
198.2.f.c 4 3.b odd 2 1
198.2.f.c 4 33.h odd 10 1
528.2.y.d 4 4.b odd 2 1
528.2.y.d 4 44.h odd 10 1
726.2.a.j 2 11.d odd 10 1
726.2.a.l 2 11.c even 5 1
726.2.e.f 4 11.c even 5 2
726.2.e.n 4 11.d odd 10 2
726.2.e.r 4 11.b odd 2 1
726.2.e.r 4 11.d odd 10 1
2178.2.a.t 2 33.h odd 10 1
2178.2.a.bb 2 33.f even 10 1
5808.2.a.cb 2 44.h odd 10 1
5808.2.a.cg 2 44.g even 10 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{4} - 8T_{5}^{3} + 34T_{5}^{2} - 77T_{5} + 121 \) acting on \(S_{2}^{\mathrm{new}}(66, [\chi])\). 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
$3$ \( T^{4} - T^{3} + T^{2} + \cdots + 1 \) Copy content Toggle raw display
$5$ \( T^{4} - 8 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$7$ \( T^{4} + 6 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$11$ \( T^{4} + 4 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$13$ \( T^{4} + 4 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$17$ \( T^{4} + 12 T^{3} + \cdots + 256 \) Copy content Toggle raw display
$19$ \( T^{4} - 6 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$23$ \( (T^{2} + 2 T - 4)^{2} \) Copy content Toggle raw display
$29$ \( T^{4} + T^{3} + 6 T^{2} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{4} + 5 T^{3} + \cdots + 3025 \) Copy content Toggle raw display
$37$ \( T^{4} - 4 T^{3} + \cdots + 256 \) Copy content Toggle raw display
$41$ \( T^{4} - 6 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$43$ \( (T^{2} + 2 T - 4)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + 8 T^{3} + \cdots + 256 \) Copy content Toggle raw display
$53$ \( T^{4} + 7 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$59$ \( T^{4} - 8 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$61$ \( T^{4} - 14 T^{3} + \cdots + 5776 \) Copy content Toggle raw display
$67$ \( (T - 4)^{4} \) Copy content Toggle raw display
$71$ \( T^{4} - 2 T^{3} + \cdots + 1936 \) Copy content Toggle raw display
$73$ \( T^{4} - 21 T^{3} + \cdots + 2401 \) Copy content Toggle raw display
$79$ \( T^{4} + 16 T^{3} + \cdots + 3481 \) Copy content Toggle raw display
$83$ \( T^{4} - 26 T^{3} + \cdots + 121 \) Copy content Toggle raw display
$89$ \( (T^{2} + 10 T - 20)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} - 14 T^{3} + \cdots + 2401 \) Copy content Toggle raw display
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