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Properties

Label 100.2.i.a
Level $100$
Weight $2$
Character orbit 100.i
Analytic conductor $0.799$
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] = [100,2,Mod(9,100)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(100, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([0, 7]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("100.9");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 100 = 2^{2} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 100.i (of order \(10\), 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: \(0.798504020213\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(2\) over \(\Q(\zeta_{10})\)
Coefficient field: 8.0.58140625.2
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 3x^{7} + 4x^{6} - 7x^{5} + 11x^{4} + 5x^{3} - 10x^{2} - 25x + 25 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{10}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_{5} - \beta_{4}) q^{3} + (\beta_{7} + \beta_{5} + \cdots + 2 \beta_1) q^{5}+ \cdots + (\beta_{7} + \beta_{6} + \beta_{5} + \cdots - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \beta_{5} - \beta_{4}) q^{3} + (\beta_{7} + \beta_{5} + \cdots + 2 \beta_1) q^{5}+ \cdots + (\beta_{7} + 2 \beta_{5} + \cdots + \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 5 q^{5} + 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 5 q^{5} + 2 q^{9} + 5 q^{11} - 20 q^{15} - 5 q^{17} - 8 q^{19} - 2 q^{21} - 20 q^{23} - 5 q^{25} - 8 q^{29} - 12 q^{31} + 15 q^{33} - 5 q^{35} - 10 q^{37} + 22 q^{39} + 13 q^{41} + 10 q^{45} + 45 q^{47} + 14 q^{49} - 14 q^{51} + 30 q^{53} + 35 q^{55} + 9 q^{59} + 16 q^{61} + 20 q^{63} - 25 q^{65} - 5 q^{67} - 14 q^{69} - q^{71} - 60 q^{73} - 5 q^{75} - 20 q^{77} - 24 q^{79} - 3 q^{81} - 10 q^{83} - 5 q^{85} - 55 q^{87} - 37 q^{89} + 32 q^{91} + 30 q^{95} + 25 q^{97} + 20 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Display 100 coefficients 10 coefficients

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 3x^{7} + 4x^{6} - 7x^{5} + 11x^{4} + 5x^{3} - 10x^{2} - 25x + 25 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 406\nu^{7} - 714\nu^{6} + 747\nu^{5} - 1896\nu^{4} + 2103\nu^{3} + 4949\nu^{2} + 1065\nu - 7800 ) / 1355 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 420\nu^{7} - 776\nu^{6} + 698\nu^{5} - 1924\nu^{4} + 2297\nu^{3} + 5129\nu^{2} + 1055\nu - 10265 ) / 1355 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 728\nu^{7} - 1327\nu^{6} + 1246\nu^{5} - 3353\nu^{4} + 3584\nu^{3} + 8547\nu^{2} + 2190\nu - 15715 ) / 1355 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -857\nu^{7} + 1666\nu^{6} - 1743\nu^{5} + 4424\nu^{4} - 4907\nu^{3} - 9470\nu^{2} - 2485\nu + 18200 ) / 1355 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 891\nu^{7} - 1623\nu^{6} + 1624\nu^{5} - 4492\nu^{4} + 4991\nu^{3} + 9520\nu^{2} + 3235\nu - 18960 ) / 1355 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 955\nu^{7} - 1829\nu^{6} + 1942\nu^{5} - 4891\nu^{4} + 5723\nu^{3} + 9646\nu^{2} + 2415\nu - 20550 ) / 1355 \) Copy content Toggle raw display

Display \(\nu^j\) in terms of \(\beta_i\)

\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( -\beta_{7} - \beta_{5} - \beta_{4} + \beta_{3} + \beta_{2} \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{7} + \beta_{5} - 3\beta_{4} + 4\beta_{3} + \beta_{2} + \beta _1 + 3 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( 5\beta_{7} - 5\beta_{6} + 4\beta_{5} + 2\beta_{4} + 2\beta_{3} + 2\beta_{2} + 4\beta _1 + 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( 4\beta_{7} - 6\beta_{6} - 7\beta_{3} + 11\beta_{2} + 4\beta _1 - 13 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( 7\beta_{6} + 7\beta_{5} - 8\beta_{4} - 7\beta_{3} + 21\beta_{2} - 2\beta _1 - 21 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 23\beta_{7} + 38\beta_{5} + 23\beta_{4} - 23\beta_{3} + 12\beta_{2} \) Copy content Toggle raw display

Display \(\beta_i\) in terms of \(\nu^j\)

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/100\mathbb{Z}\right)^\times\).

\(n\) \(51\) \(77\)
\(\chi(n)\) \(1\) \(\beta_{2}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
9.1
−0.357358 + 1.86824i
1.66637 − 0.917186i
1.17421 + 0.0566033i
−0.983224 − 0.644389i
1.17421 − 0.0566033i
−0.983224 + 0.644389i
−0.357358 − 1.86824i
1.66637 + 0.917186i
0 −2.19625 + 0.713605i 0 1.52988 + 1.63079i 0 4.21139i 0 1.88723 − 1.37116i 0
9.2 0 1.07822 − 0.350334i 0 0.279141 − 2.21858i 0 0.768409i 0 −1.38723 + 1.00788i 0
29.1 0 −0.107666 + 0.148189i 0 2.09089 + 0.792578i 0 − 1.35874i 0 0.916683 + 2.82126i 0
29.2 0 1.22570 − 1.68703i 0 −1.39991 − 1.74363i 0 0.909715i 0 −0.416683 − 1.28242i 0
69.1 0 −0.107666 − 0.148189i 0 2.09089 − 0.792578i 0 1.35874i 0 0.916683 − 2.82126i 0
69.2 0 1.22570 + 1.68703i 0 −1.39991 + 1.74363i 0 − 0.909715i 0 −0.416683 + 1.28242i 0
89.1 0 −2.19625 − 0.713605i 0 1.52988 − 1.63079i 0 − 4.21139i 0 1.88723 + 1.37116i 0
89.2 0 1.07822 + 0.350334i 0 0.279141 + 2.21858i 0 − 0.768409i 0 −1.38723 − 1.00788i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 9.2
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
25.e even 10 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 100.2.i.a ✓ 8
3.b odd 2 1 900.2.w.a 8
4.b odd 2 1 400.2.y.b 8
5.b even 2 1 500.2.i.a 8
5.c odd 4 2 500.2.g.b 16
25.d even 5 1 500.2.i.a 8
25.d even 5 1 2500.2.c.b 8
25.e even 10 1 inner 100.2.i.a ✓ 8
25.e even 10 1 2500.2.c.b 8
25.f odd 20 2 500.2.g.b 16
25.f odd 20 2 2500.2.a.f 8
75.h odd 10 1 900.2.w.a 8
100.h odd 10 1 400.2.y.b 8
100.l even 20 2 10000.2.a.bi 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
100.2.i.a ✓ 8 1.a even 1 1 trivial
100.2.i.a ✓ 8 25.e even 10 1 inner
400.2.y.b 8 4.b odd 2 1
400.2.y.b 8 100.h odd 10 1
500.2.g.b 16 5.c odd 4 2
500.2.g.b 16 25.f odd 20 2
500.2.i.a 8 5.b even 2 1
500.2.i.a 8 25.d even 5 1
900.2.w.a 8 3.b odd 2 1
900.2.w.a 8 75.h odd 10 1
2500.2.a.f 8 25.f odd 20 2
2500.2.c.b 8 25.d even 5 1
2500.2.c.b 8 25.e even 10 1
10000.2.a.bi 8 100.l even 20 2

Hecke kernels

This newform subspace is the entire newspace \(S_{2}^{\mathrm{new}}(100, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( T^{8} - 4 T^{6} + \cdots + 1 \) Copy content Toggle raw display
$5$ \( T^{8} - 5 T^{7} + \cdots + 625 \) Copy content Toggle raw display
$7$ \( T^{8} + 21 T^{6} + \cdots + 16 \) Copy content Toggle raw display
$11$ \( T^{8} - 5 T^{7} + \cdots + 400 \) Copy content Toggle raw display
$13$ \( T^{8} - 19 T^{6} + \cdots + 121 \) Copy content Toggle raw display
$17$ \( T^{8} + 5 T^{7} + \cdots + 190096 \) Copy content Toggle raw display
$19$ \( T^{8} + 8 T^{7} + \cdots + 121 \) Copy content Toggle raw display
$23$ \( T^{8} + 20 T^{7} + \cdots + 7921 \) Copy content Toggle raw display
$29$ \( T^{8} + 8 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{8} + 12 T^{7} + \cdots + 6241 \) Copy content Toggle raw display
$37$ \( T^{8} + 10 T^{7} + \cdots + 57121 \) Copy content Toggle raw display
$41$ \( T^{8} - 13 T^{7} + \cdots + 99856 \) Copy content Toggle raw display
$43$ \( T^{8} + 125 T^{6} + \cdots + 400 \) Copy content Toggle raw display
$47$ \( T^{8} - 45 T^{7} + \cdots + 73441 \) Copy content Toggle raw display
$53$ \( T^{8} - 30 T^{7} + \cdots + 116281 \) Copy content Toggle raw display
$59$ \( T^{8} - 9 T^{7} + \cdots + 167281 \) Copy content Toggle raw display
$61$ \( T^{8} - 16 T^{7} + \cdots + 3721 \) Copy content Toggle raw display
$67$ \( T^{8} + 5 T^{7} + \cdots + 38416 \) Copy content Toggle raw display
$71$ \( T^{8} + T^{7} + \cdots + 841 \) Copy content Toggle raw display
$73$ \( T^{8} + 60 T^{7} + \cdots + 20693401 \) Copy content Toggle raw display
$79$ \( T^{8} + 24 T^{7} + \cdots + 12453841 \) Copy content Toggle raw display
$83$ \( T^{8} + 10 T^{7} + \cdots + 2627641 \) Copy content Toggle raw display
$89$ \( T^{8} + 37 T^{7} + \cdots + 205176976 \) Copy content Toggle raw display
$97$ \( T^{8} - 25 T^{7} + \cdots + 9554281 \) Copy content Toggle raw display
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