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Properties

Label 1875.1.j.d
Level $1875$
Weight $1$
Character orbit 1875.j
Analytic conductor $0.936$
Analytic rank $0$
Dimension $4$
Projective image $D_{5}$
CM discriminant -3
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1875,1,Mod(251,1875)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1875, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([5, 8]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1875.251");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1875 = 3 \cdot 5^{4} \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1875.j (of order \(10\), degree \(4\), 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: \(0.935746898687\)
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: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{5}\)
Projective field: Galois closure of 5.1.3515625.1

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q - \zeta_{10}^{2} q^{3} + \zeta_{10}^{2} q^{4} + ( - \zeta_{10}^{4} + \zeta_{10}) q^{7} + \zeta_{10}^{4} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{10}^{2} q^{3} + \zeta_{10}^{2} q^{4} + ( - \zeta_{10}^{4} + \zeta_{10}) q^{7} + \zeta_{10}^{4} q^{9} - \zeta_{10}^{4} q^{12} + ( - \zeta_{10}^{2} + \zeta_{10}) q^{13} + \zeta_{10}^{4} q^{16} + ( - \zeta_{10} + 1) q^{19} + ( - \zeta_{10}^{3} - \zeta_{10}) q^{21} + \zeta_{10} q^{27} + (\zeta_{10}^{3} + \zeta_{10}) q^{28} + (\zeta_{10}^{4} + \zeta_{10}^{2}) q^{31} - \zeta_{10} q^{36} + ( - \zeta_{10}^{2} + \zeta_{10}) q^{37} + (\zeta_{10}^{4} - \zeta_{10}^{3}) q^{39} + (\zeta_{10}^{3} - \zeta_{10}^{2}) q^{43} + \zeta_{10} q^{48} + ( - \zeta_{10}^{3} + \zeta_{10}^{2} + 1) q^{49} + ( - \zeta_{10}^{4} + \zeta_{10}^{3}) q^{52} + (\zeta_{10}^{3} - \zeta_{10}^{2}) q^{57} + (\zeta_{10}^{2} + 1) q^{61} + (\zeta_{10}^{3} - 1) q^{63} - \zeta_{10} q^{64} + ( - \zeta_{10}^{4} - \zeta_{10}^{2}) q^{67} + ( - \zeta_{10}^{2} - 1) q^{73} + ( - \zeta_{10}^{3} + \zeta_{10}^{2}) q^{76} + ( - \zeta_{10}^{3} - \zeta_{10}) q^{79} - \zeta_{10}^{3} q^{81} + ( - \zeta_{10}^{3} + 1) q^{84} + ( - \zeta_{10}^{3} + \zeta_{10}^{2} + \cdots + 1) q^{91} + \cdots + (\zeta_{10}^{3} + \zeta_{10}) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + q^{3} - q^{4} + 2 q^{7} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + q^{3} - q^{4} + 2 q^{7} - q^{9} + q^{12} + 2 q^{13} - q^{16} + 3 q^{19} - 2 q^{21} + q^{27} + 2 q^{28} - 2 q^{31} - q^{36} + 2 q^{37} - 2 q^{39} + 2 q^{43} + q^{48} + 2 q^{49} + 2 q^{52} + 2 q^{57} + 3 q^{61} - 3 q^{63} - q^{64} + 2 q^{67} - 3 q^{73} - 2 q^{76} - 2 q^{79} - q^{81} + 3 q^{84} + q^{91} + 2 q^{93} + 2 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Display 100 coefficients 10 coefficients

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1875\mathbb{Z}\right)^\times\).

\(n\) \(626\) \(1252\)
\(\chi(n)\) \(-1\) \(\zeta_{10}^{2}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
251.1
0.809017 − 0.587785i
0.809017 + 0.587785i
−0.309017 − 0.951057i
−0.309017 + 0.951057i
0 −0.309017 + 0.951057i 0.309017 − 0.951057i 0 0 1.61803 0 −0.809017 − 0.587785i 0
1001.1 0 −0.309017 − 0.951057i 0.309017 + 0.951057i 0 0 1.61803 0 −0.809017 + 0.587785i 0
1376.1 0 0.809017 − 0.587785i −0.809017 + 0.587785i 0 0 −0.618034 0 0.309017 − 0.951057i 0
1751.1 0 0.809017 + 0.587785i −0.809017 − 0.587785i 0 0 −0.618034 0 0.309017 + 0.951057i 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
3.b odd 2 1 CM by \(\Q(\sqrt{-3}) \)
25.d even 5 1 inner
75.j odd 10 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1875.1.j.d 4
3.b odd 2 1 CM 1875.1.j.d 4
5.b even 2 1 1875.1.j.a 4
5.c odd 4 2 1875.1.h.e 8
15.d odd 2 1 1875.1.j.a 4
15.e even 4 2 1875.1.h.e 8
25.d even 5 1 1875.1.c.a ✓ 2
25.d even 5 2 1875.1.j.c 4
25.d even 5 1 inner 1875.1.j.d 4
25.e even 10 1 1875.1.c.b yes 2
25.e even 10 1 1875.1.j.a 4
25.e even 10 2 1875.1.j.b 4
25.f odd 20 2 1875.1.d.a 4
25.f odd 20 2 1875.1.h.e 8
25.f odd 20 4 1875.1.h.f 8
75.h odd 10 1 1875.1.c.b yes 2
75.h odd 10 1 1875.1.j.a 4
75.h odd 10 2 1875.1.j.b 4
75.j odd 10 1 1875.1.c.a ✓ 2
75.j odd 10 2 1875.1.j.c 4
75.j odd 10 1 inner 1875.1.j.d 4
75.l even 20 2 1875.1.d.a 4
75.l even 20 2 1875.1.h.e 8
75.l even 20 4 1875.1.h.f 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1875.1.c.a ✓ 2 25.d even 5 1
1875.1.c.a ✓ 2 75.j odd 10 1
1875.1.c.b yes 2 25.e even 10 1
1875.1.c.b yes 2 75.h odd 10 1
1875.1.d.a 4 25.f odd 20 2
1875.1.d.a 4 75.l even 20 2
1875.1.h.e 8 5.c odd 4 2
1875.1.h.e 8 15.e even 4 2
1875.1.h.e 8 25.f odd 20 2
1875.1.h.e 8 75.l even 20 2
1875.1.h.f 8 25.f odd 20 4
1875.1.h.f 8 75.l even 20 4
1875.1.j.a 4 5.b even 2 1
1875.1.j.a 4 15.d odd 2 1
1875.1.j.a 4 25.e even 10 1
1875.1.j.a 4 75.h odd 10 1
1875.1.j.b 4 25.e even 10 2
1875.1.j.b 4 75.h odd 10 2
1875.1.j.c 4 25.d even 5 2
1875.1.j.c 4 75.j odd 10 2
1875.1.j.d 4 1.a even 1 1 trivial
1875.1.j.d 4 3.b odd 2 1 CM
1875.1.j.d 4 25.d even 5 1 inner
1875.1.j.d 4 75.j odd 10 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{1}^{\mathrm{new}}(1875, [\chi])\):

\( T_{2} \) Copy content Toggle raw display
\( T_{7}^{2} - T_{7} - 1 \) Copy content Toggle raw display
\( T_{13}^{4} - 2T_{13}^{3} + 4T_{13}^{2} - 3T_{13} + 1 \) Copy content Toggle raw display

Hecke characteristic polynomials

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