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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [5328,2,Mod(2737,5328)] 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("5328.2737"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(5328, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 5328 = 2^{4} \cdot 3^{2} \cdot 37 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 5328.h (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,0,0,0,0,-4,0,0,0,-8,0,0,0,0,0,0,0,0,0,0,0,0,0,-8,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,-8] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(41)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(42.5442941969\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\sqrt{-2}, \sqrt{5})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 6x^{2} + 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: no (minimal twist has level 444)
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.

\(f(q)\) \(=\) \( q - \beta_1 q^{5} + (\beta_{3} - 1) q^{7} + (2 \beta_{3} - 2) q^{11} + 2 \beta_{2} q^{13} + ( - \beta_{2} - 2 \beta_1) q^{17} + (\beta_{2} - \beta_1) q^{19} + (4 \beta_{2} - \beta_1) q^{23} + (3 \beta_{3} - 2) q^{25}+ \cdots - 6 \beta_{2} q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{7} - 8 q^{11} - 8 q^{25} - 8 q^{41} + 16 q^{47} - 4 q^{49} - 8 q^{53} - 8 q^{65} + 4 q^{67} + 4 q^{73} + 48 q^{77} + 24 q^{83} - 52 q^{85} - 32 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 6x^{2} + 4 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{3} + 2\nu ) / 2 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} + 6\nu ) / 2 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \nu^{2} + 3 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} - \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{3} - 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( -\beta_{2} + 3\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/5328\mathbb{Z}\right)^\times\).

\(n\) \(1297\) \(1333\) \(1999\) \(2369\)
\(\chi(n)\) \(-1\) \(1\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
2737.1
2.28825i
0.874032i
0.874032i
2.28825i
0 0 0 3.70246i 0 −3.23607 0 0 0
2737.2 0 0 0 0.540182i 0 1.23607 0 0 0
2737.3 0 0 0 0.540182i 0 1.23607 0 0 0
2737.4 0 0 0 3.70246i 0 −3.23607 0 0 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
37.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 5328.2.h.g 4
3.b odd 2 1 1776.2.h.f 4
4.b odd 2 1 1332.2.e.e 4
12.b even 2 1 444.2.e.a 4
37.b even 2 1 inner 5328.2.h.g 4
111.d odd 2 1 1776.2.h.f 4
148.b odd 2 1 1332.2.e.e 4
444.g even 2 1 444.2.e.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
444.2.e.a 4 12.b even 2 1
444.2.e.a 4 444.g even 2 1
1332.2.e.e 4 4.b odd 2 1
1332.2.e.e 4 148.b odd 2 1
1776.2.h.f 4 3.b odd 2 1
1776.2.h.f 4 111.d odd 2 1
5328.2.h.g 4 1.a even 1 1 trivial
5328.2.h.g 4 37.b even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(5328, [\chi])\):

\( T_{5}^{4} + 14T_{5}^{2} + 4 \) Copy content Toggle raw display
\( T_{7}^{2} + 2T_{7} - 4 \) Copy content Toggle raw display
\( T_{13}^{4} + 24T_{13}^{2} + 64 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( T^{4} + 14T^{2} + 4 \) Copy content Toggle raw display
$7$ \( (T^{2} + 2 T - 4)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} + 4 T - 16)^{2} \) Copy content Toggle raw display
$13$ \( T^{4} + 24T^{2} + 64 \) Copy content Toggle raw display
$17$ \( T^{4} + 54T^{2} + 484 \) Copy content Toggle raw display
$19$ \( T^{4} + 24T^{2} + 64 \) Copy content Toggle raw display
$23$ \( T^{4} + 126T^{2} + 3844 \) Copy content Toggle raw display
$29$ \( T^{4} + 86T^{2} + 1444 \) Copy content Toggle raw display
$31$ \( (T^{2} + 40)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} + 54T^{2} + 1369 \) Copy content Toggle raw display
$41$ \( (T + 2)^{4} \) Copy content Toggle raw display
$43$ \( (T^{2} + 8)^{2} \) Copy content Toggle raw display
$47$ \( (T - 4)^{4} \) Copy content Toggle raw display
$53$ \( (T^{2} + 4 T - 76)^{2} \) Copy content Toggle raw display
$59$ \( T^{4} + 6T^{2} + 4 \) Copy content Toggle raw display
$61$ \( (T^{2} + 32)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} - 2 T - 44)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} - 80)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} - 2 T - 4)^{2} \) Copy content Toggle raw display
$79$ \( T^{4} + 344 T^{2} + 23104 \) Copy content Toggle raw display
$83$ \( (T^{2} - 12 T + 16)^{2} \) Copy content Toggle raw display
$89$ \( T^{4} + 126T^{2} + 3844 \) Copy content Toggle raw display
$97$ \( T^{4} + 216T^{2} + 5184 \) Copy content Toggle raw display
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