Properties

Label 186.2.m.c
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.

\(f(q)\) \(=\) \( q - \zeta_{15}^{6} q^{2} + \zeta_{15}^{4} q^{3} + ( - \zeta_{15}^{7} - \zeta_{15}^{2}) q^{4} + (4 \zeta_{15}^{7} - \zeta_{15}^{6} + \cdots - 2) q^{5} + \cdots + (\zeta_{15}^{7} - \zeta_{15}^{5} + \cdots - 1) q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{15}^{6} q^{2} + \zeta_{15}^{4} q^{3} + ( - \zeta_{15}^{7} - \zeta_{15}^{2}) q^{4} + (4 \zeta_{15}^{7} - \zeta_{15}^{6} + \cdots - 2) q^{5} + \cdots + (2 \zeta_{15}^{7} - 4 \zeta_{15}^{6} + \cdots - 1) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 2 q^{2} + q^{3} - 2 q^{4} - 5 q^{5} + 4 q^{6} + 2 q^{7} + 2 q^{8} + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 2 q^{2} + q^{3} - 2 q^{4} - 5 q^{5} + 4 q^{6} + 2 q^{7} + 2 q^{8} + q^{9} - 10 q^{10} + 5 q^{11} + q^{12} + q^{13} - 2 q^{14} - 5 q^{15} - 2 q^{16} - 2 q^{17} - q^{18} - 20 q^{19} + 15 q^{20} + 2 q^{21} + 10 q^{22} + 6 q^{23} - q^{24} - 25 q^{25} - 6 q^{26} - 2 q^{27} + 2 q^{28} + 9 q^{29} - 10 q^{30} + 22 q^{31} - 8 q^{32} - 28 q^{34} - 30 q^{35} - 4 q^{36} - 6 q^{37} + 23 q^{39} + 15 q^{40} + 23 q^{41} - 2 q^{42} + 11 q^{43} + 15 q^{44} + 15 q^{45} - 11 q^{46} - 8 q^{47} + q^{48} + 27 q^{49} - 2 q^{51} + 16 q^{52} + 18 q^{53} + 2 q^{54} - 20 q^{55} - 7 q^{56} + 10 q^{57} + 16 q^{58} + 21 q^{59} - 5 q^{60} - 6 q^{61} + 8 q^{62} - 14 q^{63} - 2 q^{64} - 75 q^{65} - 5 q^{66} - 17 q^{67} - 7 q^{68} - 3 q^{69} + 30 q^{70} - 20 q^{71} - q^{72} - 9 q^{73} - 4 q^{74} + 15 q^{76} + 17 q^{78} + 47 q^{79} - 5 q^{80} + q^{81} - 23 q^{82} + 2 q^{84} - 60 q^{85} + 39 q^{86} - 7 q^{87} - 5 q^{88} - 2 q^{89} - 10 q^{90} + 26 q^{91} - 34 q^{92} - 11 q^{93} - 12 q^{94} + 50 q^{95} - q^{96} + 7 q^{97} + 3 q^{98} + 5 q^{99}+O(q^{100}) \) 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 1.49622 2.59153i 0.500000 + 0.866025i −1.57151 0.699679i 0.809017 + 0.587785i 0.913545 0.406737i −2.92705 0.622164i
19.1 0.809017 + 0.587785i 0.913545 + 0.406737i 0.309017 + 0.951057i 0.233733 0.404837i 0.500000 + 0.866025i −1.61192 + 1.79022i −0.309017 + 0.951057i 0.669131 + 0.743145i 0.427051 0.190135i
49.1 0.809017 0.587785i 0.913545 0.406737i 0.309017 0.951057i 0.233733 + 0.404837i 0.500000 0.866025i −1.61192 1.79022i −0.309017 0.951057i 0.669131 0.743145i 0.427051 + 0.190135i
103.1 0.809017 + 0.587785i −0.104528 0.994522i 0.309017 + 0.951057i −2.04275 3.53815i 0.500000 0.866025i 4.34799 + 0.924193i −0.309017 + 0.951057i −0.978148 + 0.207912i 0.427051 4.06312i
121.1 0.809017 0.587785i −0.104528 + 0.994522i 0.309017 0.951057i −2.04275 + 3.53815i 0.500000 + 0.866025i 4.34799 0.924193i −0.309017 0.951057i −0.978148 0.207912i 0.427051 + 4.06312i
133.1 −0.309017 + 0.951057i −0.978148 0.207912i −0.809017 0.587785i 1.49622 + 2.59153i 0.500000 0.866025i −1.57151 + 0.699679i 0.809017 0.587785i 0.913545 + 0.406737i −2.92705 + 0.622164i
169.1 −0.309017 + 0.951057i 0.669131 0.743145i −0.809017 0.587785i −2.18720 + 3.78835i 0.500000 + 0.866025i −0.164562 + 1.56570i 0.809017 0.587785i −0.104528 0.994522i −2.92705 3.25082i
175.1 −0.309017 0.951057i 0.669131 + 0.743145i −0.809017 + 0.587785i −2.18720 3.78835i 0.500000 0.866025i −0.164562 1.56570i 0.809017 + 0.587785i −0.104528 + 0.994522i −2.92705 + 3.25082i
\(n\): 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.c 8
3.b odd 2 1 558.2.ba.d 8
31.g even 15 1 inner 186.2.m.c 8
31.g even 15 1 5766.2.a.bb 4
31.h odd 30 1 5766.2.a.y 4
93.o odd 30 1 558.2.ba.d 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
186.2.m.c 8 1.a even 1 1 trivial
186.2.m.c 8 31.g even 15 1 inner
558.2.ba.d 8 3.b odd 2 1
558.2.ba.d 8 93.o odd 30 1
5766.2.a.y 4 31.h odd 30 1
5766.2.a.bb 4 31.g even 15 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{8} + 5T_{5}^{7} + 35T_{5}^{6} + 50T_{5}^{5} + 325T_{5}^{4} + 250T_{5}^{3} + 2750T_{5}^{2} - 1250T_{5} + 625 \) 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
$5$ \( T^{8} + 5 T^{7} + \cdots + 625 \) Copy content Toggle raw display
$7$ \( T^{8} - 2 T^{7} + \cdots + 841 \) Copy content Toggle raw display
$11$ \( T^{8} - 5 T^{7} + \cdots + 625 \) Copy content Toggle raw display
$13$ \( T^{8} - T^{7} + \cdots + 3721 \) Copy content Toggle raw display
$17$ \( T^{8} + 2 T^{7} + \cdots + 3481 \) Copy content Toggle raw display
$19$ \( T^{8} + 20 T^{7} + \cdots + 24025 \) Copy content Toggle raw display
$23$ \( T^{8} - 6 T^{7} + \cdots + 58081 \) Copy content Toggle raw display
$29$ \( T^{8} - 9 T^{7} + \cdots + 128881 \) Copy content Toggle raw display
$31$ \( (T^{4} - 11 T^{3} + \cdots + 961)^{2} \) Copy content Toggle raw display
$37$ \( T^{8} + 6 T^{7} + \cdots + 3721 \) Copy content Toggle raw display
$41$ \( T^{8} - 23 T^{7} + \cdots + 44521 \) Copy content Toggle raw display
$43$ \( T^{8} - 11 T^{7} + \cdots + 3721 \) Copy content Toggle raw display
$47$ \( T^{8} + 8 T^{7} + \cdots + 215296 \) Copy content Toggle raw display
$53$ \( T^{8} - 18 T^{7} + \cdots + 654481 \) Copy content Toggle raw display
$59$ \( T^{8} - 21 T^{7} + \cdots + 32761 \) Copy content Toggle raw display
$61$ \( (T^{4} + 3 T^{3} + \cdots + 211)^{2} \) Copy content Toggle raw display
$67$ \( T^{8} + 17 T^{7} + \cdots + 12313081 \) Copy content Toggle raw display
$71$ \( T^{8} + 20 T^{7} + \cdots + 25 \) Copy content Toggle raw display
$73$ \( T^{8} + 9 T^{7} + \cdots + 477481 \) Copy content Toggle raw display
$79$ \( T^{8} - 47 T^{7} + \cdots + 2430481 \) Copy content Toggle raw display
$83$ \( T^{8} - 220 T^{6} + \cdots + 1836025 \) Copy content Toggle raw display
$89$ \( T^{8} + 2 T^{7} + \cdots + 44521 \) Copy content Toggle raw display
$97$ \( T^{8} - 7 T^{7} + \cdots + 841 \) Copy content Toggle raw display
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