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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [425,4,Mod(1,425)] 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("425.1"); S:= CuspForms(chi, 4); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(425, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0])) N = Newforms(chi, 4, names="a")
 
Level: \( N \) \(=\) \( 425 = 5^{2} \cdot 17 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 425.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [3,-3,-9] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(3)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(25.0758117524\)
Analytic rank: \(1\)
Dimension: \(3\)
Coefficient field: 3.3.568.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - x^{2} - 6x - 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 85)
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

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

\(f(q)\) \(=\) \( q + (\beta_{2} + \beta_1 - 1) q^{2} + (3 \beta_1 - 4) q^{3} + ( - 4 \beta_{2} - 2 \beta_1 - 1) q^{4} + ( - 4 \beta_{2} - \beta_1 + 10) q^{6} + ( - 5 \beta_{2} + 3 \beta_1 - 14) q^{7} + (3 \beta_{2} - 3 \beta_1 - 11) q^{8}+ \cdots + (363 \beta_{2} - 269 \beta_1 + 1052) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q - 3 q^{2} - 9 q^{3} - q^{4} + 33 q^{6} - 34 q^{7} - 39 q^{8} + 60 q^{9} + 52 q^{11} - 17 q^{12} - 19 q^{13} - 2 q^{14} + 59 q^{16} + 51 q^{17} - 153 q^{19} + 286 q^{21} + 64 q^{22} - 162 q^{23} - 39 q^{24}+ \cdots + 2524 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 6x - 2 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} - 2\nu - 4 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} + 2\beta _1 + 4 \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
−0.363328
−1.76156
3.12489
−4.50466 −5.08998 12.2920 0 22.9287 0.616696 −19.3340 −1.09206 0
1.2 −0.135359 −9.28467 −7.98168 0 1.25676 −32.4157 2.16327 59.2051 0
1.3 1.64002 5.37466 −5.31032 0 8.81456 −2.20103 −21.8292 1.88693 0
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(5\) \( +1 \)
\(17\) \( -1 \)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 425.4.a.f 3
5.b even 2 1 85.4.a.f 3
5.c odd 4 2 425.4.b.h 6
15.d odd 2 1 765.4.a.k 3
20.d odd 2 1 1360.4.a.p 3
85.c even 2 1 1445.4.a.k 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
85.4.a.f 3 5.b even 2 1
425.4.a.f 3 1.a even 1 1 trivial
425.4.b.h 6 5.c odd 4 2
765.4.a.k 3 15.d odd 2 1
1360.4.a.p 3 20.d odd 2 1
1445.4.a.k 3 85.c even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(425))\):

\( T_{2}^{3} + 3T_{2}^{2} - 7T_{2} - 1 \) Copy content Toggle raw display
\( T_{3}^{3} + 9T_{3}^{2} - 30T_{3} - 254 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} + 3 T^{2} + \cdots - 1 \) Copy content Toggle raw display
$3$ \( T^{3} + 9 T^{2} + \cdots - 254 \) Copy content Toggle raw display
$5$ \( T^{3} \) Copy content Toggle raw display
$7$ \( T^{3} + 34 T^{2} + \cdots - 44 \) Copy content Toggle raw display
$11$ \( T^{3} - 52 T^{2} + \cdots + 6784 \) Copy content Toggle raw display
$13$ \( T^{3} + 19 T^{2} + \cdots - 20408 \) Copy content Toggle raw display
$17$ \( (T - 17)^{3} \) Copy content Toggle raw display
$19$ \( T^{3} + 153 T^{2} + \cdots - 43112 \) Copy content Toggle raw display
$23$ \( T^{3} + 162 T^{2} + \cdots - 587260 \) Copy content Toggle raw display
$29$ \( T^{3} - 45 T^{2} + \cdots - 1563820 \) Copy content Toggle raw display
$31$ \( T^{3} + 67 T^{2} + \cdots + 634 \) Copy content Toggle raw display
$37$ \( T^{3} - 308 T^{2} + \cdots + 879328 \) Copy content Toggle raw display
$41$ \( T^{3} - 498 T^{2} + \cdots + 948856 \) Copy content Toggle raw display
$43$ \( T^{3} - 246 T^{2} + \cdots + 8063768 \) Copy content Toggle raw display
$47$ \( T^{3} + 101 T^{2} + \cdots + 37575724 \) Copy content Toggle raw display
$53$ \( T^{3} + 893 T^{2} + \cdots + 23102788 \) Copy content Toggle raw display
$59$ \( T^{3} - 355 T^{2} + \cdots + 23789032 \) Copy content Toggle raw display
$61$ \( T^{3} - 1019 T^{2} + \cdots - 32261500 \) Copy content Toggle raw display
$67$ \( T^{3} + 334 T^{2} + \cdots - 2242600 \) Copy content Toggle raw display
$71$ \( T^{3} - 313 T^{2} + \cdots - 104660798 \) Copy content Toggle raw display
$73$ \( T^{3} + 639 T^{2} + \cdots + 23564196 \) Copy content Toggle raw display
$79$ \( T^{3} + 92 T^{2} + \cdots + 310900832 \) Copy content Toggle raw display
$83$ \( T^{3} + 2736 T^{2} + \cdots + 751119952 \) Copy content Toggle raw display
$89$ \( T^{3} - 1623 T^{2} + \cdots + 25616512 \) Copy content Toggle raw display
$97$ \( T^{3} - 475 T^{2} + \cdots + 473709668 \) Copy content Toggle raw display
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