Properties

Label 186.2.m.a
Level $186$
Weight $2$
Character orbit 186.m
Analytic conductor $1.485$
Analytic rank $0$
Dimension $8$
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] = [186,2,Mod(7,186)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(186, base_ring=CyclotomicField(30))
 
chi = DirichletCharacter(H, H._module([0, 28]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("186.7");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 186 = 2 \cdot 3 \cdot 31 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 186.m (of order \(15\), degree \(8\), 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: \(1.48521747760\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: \(\Q(\zeta_{15})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{7} + x^{5} - x^{4} + x^{3} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{15}]$

$q$-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 \(\zeta_{15}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \zeta_{15}^{6} q^{2} + \zeta_{15}^{4} q^{3} + ( - \zeta_{15}^{7} - \zeta_{15}^{2}) q^{4} + ( - 2 \zeta_{15}^{7} + \zeta_{15}^{6} + \cdots + 2) q^{5}+ \cdots + (\zeta_{15}^{7} - \zeta_{15}^{5} + \cdots - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{15}^{6} q^{2} + \zeta_{15}^{4} q^{3} + ( - \zeta_{15}^{7} - \zeta_{15}^{2}) q^{4} + ( - 2 \zeta_{15}^{7} + \zeta_{15}^{6} + \cdots + 2) q^{5}+ \cdots + (\zeta_{15}^{5} - \zeta_{15}^{4} + \cdots + 1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 2 q^{2} + q^{3} - 2 q^{4} + 3 q^{5} - 4 q^{6} - 4 q^{7} - 2 q^{8} + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 2 q^{2} + q^{3} - 2 q^{4} + 3 q^{5} - 4 q^{6} - 4 q^{7} - 2 q^{8} + q^{9} - 12 q^{10} + 3 q^{11} + q^{12} + 11 q^{13} - 4 q^{14} + 9 q^{15} - 2 q^{16} + q^{18} + 2 q^{19} + 3 q^{20} + 6 q^{21} - 12 q^{22} - 6 q^{23} + q^{24} - q^{25} - 4 q^{26} - 2 q^{27} + 6 q^{28} + 3 q^{29} - 6 q^{30} - 8 q^{31} + 8 q^{32} - 6 q^{33} + 24 q^{35} - 4 q^{36} + 8 q^{37} - 18 q^{38} + 3 q^{39} + 3 q^{40} - 3 q^{41} - 4 q^{42} - 15 q^{43} + 3 q^{44} + 3 q^{45} + 9 q^{46} - 12 q^{47} + q^{48} + 39 q^{49} + 4 q^{50} - 4 q^{52} - 36 q^{53} - 2 q^{54} - 6 q^{55} + 11 q^{56} + 2 q^{57} - 12 q^{58} + 21 q^{59} + 9 q^{60} - 70 q^{61} + 32 q^{62} - 22 q^{63} - 2 q^{64} - 27 q^{65} + 9 q^{66} + 17 q^{67} + 15 q^{68} + 3 q^{69} + 24 q^{70} - 12 q^{71} + q^{72} - q^{73} + 18 q^{74} + 4 q^{75} - 3 q^{76} + 24 q^{77} - 7 q^{78} - 33 q^{79} + 3 q^{80} + q^{81} + 27 q^{82} - 54 q^{83} - 4 q^{84} + 30 q^{85} + 35 q^{86} - 9 q^{87} + 3 q^{88} - 12 q^{89} - 12 q^{90} + 8 q^{91} - 6 q^{92} + 19 q^{93} - 12 q^{94} + 18 q^{95} + q^{96} - 9 q^{97} - 11 q^{98} + 3 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/186\mathbb{Z}\right)^\times\).

\(n\) \(125\) \(127\)
\(\chi(n)\) \(1\) \(-1 + \zeta_{15} - \zeta_{15}^{3} + \zeta_{15}^{4} - \zeta_{15}^{5} + \zeta_{15}^{7}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
7.1
0.669131 0.743145i
−0.104528 + 0.994522i
−0.104528 0.994522i
0.913545 0.406737i
0.913545 + 0.406737i
0.669131 + 0.743145i
−0.978148 + 0.207912i
−0.978148 0.207912i
0.309017 + 0.951057i −0.978148 + 0.207912i −0.809017 + 0.587785i −1.28716 + 2.22943i −0.500000 0.866025i −4.52780 2.01591i −0.809017 0.587785i 0.913545 0.406737i −2.51807 0.535233i
19.1 −0.809017 0.587785i 0.913545 + 0.406737i 0.309017 + 0.951057i 1.72256 2.98357i −0.500000 0.866025i −0.784829 + 0.871641i 0.309017 0.951057i 0.669131 + 0.743145i −3.14728 + 1.40126i
49.1 −0.809017 + 0.587785i 0.913545 0.406737i 0.309017 0.951057i 1.72256 + 2.98357i −0.500000 + 0.866025i −0.784829 0.871641i 0.309017 + 0.951057i 0.669131 0.743145i −3.14728 1.40126i
103.1 −0.809017 0.587785i −0.104528 0.994522i 0.309017 + 0.951057i 0.704489 + 1.22021i −0.500000 + 0.866025i 3.13893 + 0.667200i 0.309017 0.951057i −0.978148 + 0.207912i 0.147278 1.40126i
121.1 −0.809017 + 0.587785i −0.104528 + 0.994522i 0.309017 0.951057i 0.704489 1.22021i −0.500000 0.866025i 3.13893 0.667200i 0.309017 + 0.951057i −0.978148 0.207912i 0.147278 + 1.40126i
133.1 0.309017 0.951057i −0.978148 0.207912i −0.809017 0.587785i −1.28716 2.22943i −0.500000 + 0.866025i −4.52780 + 2.01591i −0.809017 + 0.587785i 0.913545 + 0.406737i −2.51807 + 0.535233i
169.1 0.309017 0.951057i 0.669131 0.743145i −0.809017 0.587785i 0.360114 0.623735i −0.500000 0.866025i 0.173699 1.65264i −0.809017 + 0.587785i −0.104528 0.994522i −0.481926 0.535233i
175.1 0.309017 + 0.951057i 0.669131 + 0.743145i −0.809017 + 0.587785i 0.360114 + 0.623735i −0.500000 + 0.866025i 0.173699 + 1.65264i −0.809017 0.587785i −0.104528 + 0.994522i −0.481926 + 0.535233i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 7.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
31.g even 15 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 186.2.m.a 8
3.b odd 2 1 558.2.ba.e 8
31.g even 15 1 inner 186.2.m.a 8
31.g even 15 1 5766.2.a.bg 4
31.h odd 30 1 5766.2.a.bc 4
93.o odd 30 1 558.2.ba.e 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
186.2.m.a 8 1.a even 1 1 trivial
186.2.m.a 8 31.g even 15 1 inner
558.2.ba.e 8 3.b odd 2 1
558.2.ba.e 8 93.o odd 30 1
5766.2.a.bc 4 31.h odd 30 1
5766.2.a.bg 4 31.g even 15 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{8} - 3T_{5}^{7} + 15T_{5}^{6} - 18T_{5}^{5} + 99T_{5}^{4} - 162T_{5}^{3} + 270T_{5}^{2} - 162T_{5} + 81 \) acting on \(S_{2}^{\mathrm{new}}(186, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} + T^{3} + T^{2} + \cdots + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{8} - T^{7} + T^{5} + \cdots + 1 \) Copy content Toggle raw display
$5$ \( T^{8} - 3 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$7$ \( T^{8} + 4 T^{7} + \cdots + 961 \) Copy content Toggle raw display
$11$ \( T^{8} - 3 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$13$ \( T^{8} - 11 T^{7} + \cdots + 841 \) Copy content Toggle raw display
$17$ \( T^{8} - 180 T^{5} + \cdots + 2025 \) Copy content Toggle raw display
$19$ \( T^{8} - 2 T^{7} + \cdots + 73441 \) Copy content Toggle raw display
$23$ \( T^{8} + 6 T^{7} + \cdots + 6561 \) Copy content Toggle raw display
$29$ \( T^{8} - 3 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$31$ \( T^{8} + 8 T^{7} + \cdots + 923521 \) Copy content Toggle raw display
$37$ \( T^{8} - 8 T^{7} + \cdots + 22801 \) Copy content Toggle raw display
$41$ \( T^{8} + 3 T^{7} + \cdots + 301401 \) Copy content Toggle raw display
$43$ \( T^{8} + 15 T^{7} + \cdots + 819025 \) Copy content Toggle raw display
$47$ \( T^{8} + 12 T^{7} + \cdots + 20736 \) Copy content Toggle raw display
$53$ \( T^{8} + 36 T^{7} + \cdots + 1846881 \) Copy content Toggle raw display
$59$ \( T^{8} - 21 T^{7} + \cdots + 116834481 \) Copy content Toggle raw display
$61$ \( (T^{4} + 35 T^{3} + \cdots + 1945)^{2} \) Copy content Toggle raw display
$67$ \( T^{8} - 17 T^{7} + \cdots + 23030401 \) Copy content Toggle raw display
$71$ \( T^{8} + 12 T^{7} + \cdots + 57289761 \) Copy content Toggle raw display
$73$ \( T^{8} + T^{7} + \cdots + 961 \) Copy content Toggle raw display
$79$ \( T^{8} + 33 T^{7} + \cdots + 3481 \) Copy content Toggle raw display
$83$ \( T^{8} + 54 T^{7} + \cdots + 14220441 \) Copy content Toggle raw display
$89$ \( T^{8} + 12 T^{7} + \cdots + 81 \) Copy content Toggle raw display
$97$ \( T^{8} + 9 T^{7} + \cdots + 1100401 \) Copy content Toggle raw display
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