Properties

Label 1175.1.b.b
Level $1175$
Weight $1$
Character orbit 1175.b
Analytic conductor $0.586$
Analytic rank $0$
Dimension $4$
Projective image $D_{5}$
CM discriminant -47
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1175,1,Mod(1174,1175)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1175, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1175.1174");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1175 = 5^{2} \cdot 47 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1175.b (of order \(2\), degree \(1\), not 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: \(0.586401389844\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(i, \sqrt{5})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 3x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 47)
Projective image: \(D_{5}\)
Projective field: Galois closure of 5.1.2209.1
Artin image: $C_4\times D_5$
Artin field: Galois closure of \(\mathbb{Q}[x]/(x^{20} - \cdots)\)

$q$-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 basis \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_1 q^{2} + ( - \beta_{3} - \beta_1) q^{3} + \beta_{2} q^{4} - q^{6} - \beta_1 q^{7} - \beta_{3} q^{8} + ( - \beta_{2} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_1 q^{2} + ( - \beta_{3} - \beta_1) q^{3} + \beta_{2} q^{4} - q^{6} - \beta_1 q^{7} - \beta_{3} q^{8} + ( - \beta_{2} - 1) q^{9} - \beta_{3} q^{12} + (\beta_{2} - 1) q^{14} + (\beta_{3} + \beta_1) q^{17} + \beta_{3} q^{18} - q^{21} + ( - \beta_{2} - 1) q^{24} + \beta_{3} q^{27} + ( - \beta_{3} + \beta_1) q^{28} - \beta_{3} q^{32} + q^{34} - q^{36} + (\beta_{3} + \beta_1) q^{37} + \beta_1 q^{42} - \beta_{3} q^{47} + \beta_{2} q^{49} + (\beta_{2} + 2) q^{51} + \beta_1 q^{53} + \beta_{2} q^{54} - \beta_{2} q^{56} - \beta_{2} q^{59} + \beta_{2} q^{61} + \beta_{3} q^{63} - \beta_{2} q^{64} + \beta_{3} q^{68} + ( - \beta_{2} - 1) q^{71} + (\beta_{3} + \beta_1) q^{72} + q^{74} + (\beta_{2} + 1) q^{79} + 2 \beta_{3} q^{83} - \beta_{2} q^{84} - \beta_{2} q^{89} - \beta_{2} q^{94} + ( - \beta_{2} - 1) q^{96} - \beta_1 q^{97} + ( - \beta_{3} + \beta_1) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 2 q^{4} - 4 q^{6} - 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 2 q^{4} - 4 q^{6} - 2 q^{9} - 6 q^{14} - 4 q^{21} - 2 q^{24} + 4 q^{34} - 4 q^{36} - 2 q^{49} + 6 q^{51} - 2 q^{54} + 2 q^{56} + 2 q^{59} - 2 q^{61} + 2 q^{64} - 2 q^{71} + 4 q^{74} + 2 q^{79} + 2 q^{84} + 2 q^{89} + 2 q^{94} - 2 q^{96}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 3x^{2} + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} + 1 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \nu^{3} + 2\nu \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} - 1 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{3} - 2\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1175\mathbb{Z}\right)^\times\).

\(n\) \(377\) \(851\)
\(\chi(n)\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1174.1
1.61803i
0.618034i
0.618034i
1.61803i
1.61803i 0.618034i −1.61803 0 −1.00000 1.61803i 1.00000i 0.618034 0
1174.2 0.618034i 1.61803i 0.618034 0 −1.00000 0.618034i 1.00000i −1.61803 0
1174.3 0.618034i 1.61803i 0.618034 0 −1.00000 0.618034i 1.00000i −1.61803 0
1174.4 1.61803i 0.618034i −1.61803 0 −1.00000 1.61803i 1.00000i 0.618034 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
47.b odd 2 1 CM by \(\Q(\sqrt{-47}) \)
5.b even 2 1 inner
235.b odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1175.1.b.b 4
5.b even 2 1 inner 1175.1.b.b 4
5.c odd 4 1 47.1.b.a 2
5.c odd 4 1 1175.1.d.c 2
15.e even 4 1 423.1.d.a 2
20.e even 4 1 752.1.g.a 2
35.f even 4 1 2303.1.d.c 2
35.k even 12 2 2303.1.f.b 4
35.l odd 12 2 2303.1.f.c 4
40.i odd 4 1 3008.1.g.b 2
40.k even 4 1 3008.1.g.a 2
45.k odd 12 2 3807.1.f.b 4
45.l even 12 2 3807.1.f.a 4
47.b odd 2 1 CM 1175.1.b.b 4
235.b odd 2 1 inner 1175.1.b.b 4
235.e even 4 1 47.1.b.a 2
235.e even 4 1 1175.1.d.c 2
235.k odd 92 22 2209.1.d.a 44
235.l even 92 22 2209.1.d.a 44
705.l odd 4 1 423.1.d.a 2
940.l odd 4 1 752.1.g.a 2
1645.j odd 4 1 2303.1.d.c 2
1645.v odd 12 2 2303.1.f.b 4
1645.x even 12 2 2303.1.f.c 4
1880.q odd 4 1 3008.1.g.a 2
1880.u even 4 1 3008.1.g.b 2
2115.u odd 12 2 3807.1.f.a 4
2115.x even 12 2 3807.1.f.b 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
47.1.b.a 2 5.c odd 4 1
47.1.b.a 2 235.e even 4 1
423.1.d.a 2 15.e even 4 1
423.1.d.a 2 705.l odd 4 1
752.1.g.a 2 20.e even 4 1
752.1.g.a 2 940.l odd 4 1
1175.1.b.b 4 1.a even 1 1 trivial
1175.1.b.b 4 5.b even 2 1 inner
1175.1.b.b 4 47.b odd 2 1 CM
1175.1.b.b 4 235.b odd 2 1 inner
1175.1.d.c 2 5.c odd 4 1
1175.1.d.c 2 235.e even 4 1
2209.1.d.a 44 235.k odd 92 22
2209.1.d.a 44 235.l even 92 22
2303.1.d.c 2 35.f even 4 1
2303.1.d.c 2 1645.j odd 4 1
2303.1.f.b 4 35.k even 12 2
2303.1.f.b 4 1645.v odd 12 2
2303.1.f.c 4 35.l odd 12 2
2303.1.f.c 4 1645.x even 12 2
3008.1.g.a 2 40.k even 4 1
3008.1.g.a 2 1880.q odd 4 1
3008.1.g.b 2 40.i odd 4 1
3008.1.g.b 2 1880.u even 4 1
3807.1.f.a 4 45.l even 12 2
3807.1.f.a 4 2115.u odd 12 2
3807.1.f.b 4 45.k odd 12 2
3807.1.f.b 4 2115.x even 12 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{4} + 3T_{2}^{2} + 1 \) acting on \(S_{1}^{\mathrm{new}}(1175, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
$3$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
$11$ \( T^{4} \) Copy content Toggle raw display
$13$ \( T^{4} \) Copy content Toggle raw display
$17$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
$19$ \( T^{4} \) Copy content Toggle raw display
$23$ \( T^{4} \) Copy content Toggle raw display
$29$ \( T^{4} \) Copy content Toggle raw display
$31$ \( T^{4} \) Copy content Toggle raw display
$37$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
$41$ \( T^{4} \) Copy content Toggle raw display
$43$ \( T^{4} \) Copy content Toggle raw display
$47$ \( (T^{2} + 1)^{2} \) Copy content Toggle raw display
$53$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
$59$ \( (T^{2} - T - 1)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} + T - 1)^{2} \) Copy content Toggle raw display
$67$ \( T^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} + T - 1)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} - T - 1)^{2} \) Copy content Toggle raw display
$83$ \( (T^{2} + 4)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} - T - 1)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + 3T^{2} + 1 \) Copy content Toggle raw display
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