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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [1100,2,Mod(749,1100)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma:// Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("1100.749"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(1100, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 1, 0])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 1100 = 2^{2} \cdot 5^{2} \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1100.b (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,0,0,0,0,0,0,-10,0,4] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(11)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(8.78354422234\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(i, \sqrt{13})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 7x^{2} + 9 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content 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.

\(f(q)\) \(=\) \( q + ( - \beta_{2} + \beta_1) q^{3} + (2 \beta_{2} - \beta_1) q^{7} + (3 \beta_{3} - 4) q^{9} + q^{11} + (\beta_{2} - 2 \beta_1) q^{13} + (3 \beta_{2} + \beta_1) q^{17} + q^{19} + ( - 4 \beta_{3} + 9) q^{21}+ \cdots + (3 \beta_{3} - 4) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 10 q^{9} + 4 q^{11} + 4 q^{19} + 28 q^{21} + 14 q^{29} - 8 q^{31} + 38 q^{39} + 4 q^{41} - 10 q^{49} + 2 q^{51} + 8 q^{59} + 6 q^{61} + 48 q^{69} - 4 q^{71} - 18 q^{79} + 76 q^{81} + 42 q^{89} - 46 q^{91}+ \cdots - 10 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 7x^{2} + 9 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} + 4\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \nu^{2} + 4 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{3} - 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 3\beta_{2} - 4\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1100\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(177\) \(551\)
\(\chi(n)\) \(1\) \(-1\) \(1\)

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
749.1
2.30278i
1.30278i
1.30278i
2.30278i
0 3.30278i 0 0 0 4.30278i 0 −7.90833 0
749.2 0 0.302776i 0 0 0 0.697224i 0 2.90833 0
749.3 0 0.302776i 0 0 0 0.697224i 0 2.90833 0
749.4 0 3.30278i 0 0 0 4.30278i 0 −7.90833 0
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1100.2.b.e 4
3.b odd 2 1 9900.2.c.r 4
4.b odd 2 1 4400.2.b.r 4
5.b even 2 1 inner 1100.2.b.e 4
5.c odd 4 1 1100.2.a.f 2
5.c odd 4 1 1100.2.a.i yes 2
15.d odd 2 1 9900.2.c.r 4
15.e even 4 1 9900.2.a.bg 2
15.e even 4 1 9900.2.a.by 2
20.d odd 2 1 4400.2.b.r 4
20.e even 4 1 4400.2.a.bf 2
20.e even 4 1 4400.2.a.bw 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1100.2.a.f 2 5.c odd 4 1
1100.2.a.i yes 2 5.c odd 4 1
1100.2.b.e 4 1.a even 1 1 trivial
1100.2.b.e 4 5.b even 2 1 inner
4400.2.a.bf 2 20.e even 4 1
4400.2.a.bw 2 20.e even 4 1
4400.2.b.r 4 4.b odd 2 1
4400.2.b.r 4 20.d odd 2 1
9900.2.a.bg 2 15.e even 4 1
9900.2.a.by 2 15.e even 4 1
9900.2.c.r 4 3.b odd 2 1
9900.2.c.r 4 15.d odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1100, [\chi])\):

\( T_{3}^{4} + 11T_{3}^{2} + 1 \) Copy content Toggle raw display
\( T_{7}^{4} + 19T_{7}^{2} + 9 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 11T^{2} + 1 \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( T^{4} + 19T^{2} + 9 \) Copy content Toggle raw display
$11$ \( (T - 1)^{4} \) Copy content Toggle raw display
$13$ \( T^{4} + 34T^{2} + 81 \) Copy content Toggle raw display
$17$ \( T^{4} + 19T^{2} + 9 \) Copy content Toggle raw display
$19$ \( (T - 1)^{4} \) Copy content Toggle raw display
$23$ \( T^{4} + 63T^{2} + 729 \) Copy content Toggle raw display
$29$ \( (T^{2} - 7 T + 9)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} + 4 T - 9)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} + 58T^{2} + 9 \) Copy content Toggle raw display
$41$ \( (T^{2} - 2 T - 51)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 52)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + 34T^{2} + 81 \) Copy content Toggle raw display
$53$ \( T^{4} + 175T^{2} + 5625 \) Copy content Toggle raw display
$59$ \( (T^{2} - 4 T - 9)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} - 3 T - 1)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} + 64)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} + 2 T - 12)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} + 83T^{2} + 289 \) Copy content Toggle raw display
$79$ \( (T^{2} + 9 T + 17)^{2} \) Copy content Toggle raw display
$83$ \( T^{4} + 63T^{2} + 729 \) Copy content Toggle raw display
$89$ \( (T^{2} - 21 T + 81)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + 379 T^{2} + 16641 \) Copy content Toggle raw display
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