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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [75,10,Mod(49,75)] 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("75.49"); S:= CuspForms(chi, 10); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(75, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 1])) N = Newforms(chi, 10, names="a")
 
Level: \( N \) \(=\) \( 75 = 3 \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 10 \)
Character orbit: \([\chi]\) \(=\) 75.b (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,0,-1082] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(4)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(38.6276877123\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(i, \sqrt{241})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 121x^{2} + 3600 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 3^{2} \)
Twist minimal: no (minimal twist has level 15)
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.

\(f(q)\) \(=\) \( q + ( - \beta_{2} - 16 \beta_1) q^{2} - 81 \beta_1 q^{3} + ( - 31 \beta_{3} - 255) q^{4} + ( - 81 \beta_{3} - 1215) q^{6} + ( - 224 \beta_{2} - 7168 \beta_1) q^{7} + (239 \beta_{2} + 13186 \beta_1) q^{8}+ \cdots + (15536448 \beta_{3} + 62801892) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 1082 q^{4} - 5022 q^{6} - 26244 q^{9} - 43024 q^{11} - 923328 q^{14} + 774530 q^{16} + 191792 q^{19} - 2286144 q^{21} + 4233546 q^{24} - 10838332 q^{26} + 5356424 q^{29} + 21564864 q^{31} - 11445244 q^{34}+ \cdots + 282280464 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 121x^{2} + 3600 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{3} + 61\nu ) / 60 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} + 241\nu ) / 60 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( 3\nu^{2} + 182 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{2} - \beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} - 182 ) / 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -61\beta_{2} + 241\beta_1 ) / 3 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/75\mathbb{Z}\right)^\times\).

\(n\) \(26\) \(52\)
\(\chi(n)\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
49.1
7.26209i
8.26209i
8.26209i
7.26209i
38.7863i 81.0000i −992.374 0 −3141.69 12272.1i 18631.9i −6561.00 0
49.2 7.78626i 81.0000i 451.374 0 630.687 1839.88i 7501.08i −6561.00 0
49.3 7.78626i 81.0000i 451.374 0 630.687 1839.88i 7501.08i −6561.00 0
49.4 38.7863i 81.0000i −992.374 0 −3141.69 12272.1i 18631.9i −6561.00 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 75.10.b.f 4
3.b odd 2 1 225.10.b.i 4
5.b even 2 1 inner 75.10.b.f 4
5.c odd 4 1 15.10.a.d 2
5.c odd 4 1 75.10.a.f 2
15.d odd 2 1 225.10.b.i 4
15.e even 4 1 45.10.a.d 2
15.e even 4 1 225.10.a.k 2
20.e even 4 1 240.10.a.r 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
15.10.a.d 2 5.c odd 4 1
45.10.a.d 2 15.e even 4 1
75.10.a.f 2 5.c odd 4 1
75.10.b.f 4 1.a even 1 1 trivial
75.10.b.f 4 5.b even 2 1 inner
225.10.a.k 2 15.e even 4 1
225.10.b.i 4 3.b odd 2 1
225.10.b.i 4 15.d odd 2 1
240.10.a.r 2 20.e even 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{4} + 1565T_{2}^{2} + 91204 \) acting on \(S_{10}^{\mathrm{new}}(75, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} + 1565 T^{2} + 91204 \) Copy content Toggle raw display
$3$ \( (T^{2} + 6561)^{2} \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( T^{4} + \cdots + 509820272640000 \) Copy content Toggle raw display
$11$ \( (T^{2} + 21512 T - 2924934128)^{2} \) Copy content Toggle raw display
$13$ \( T^{4} + \cdots + 23\!\cdots\!24 \) Copy content Toggle raw display
$17$ \( T^{4} + \cdots + 60\!\cdots\!56 \) Copy content Toggle raw display
$19$ \( (T^{2} - 95896 T - 15492203120)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} + \cdots + 57\!\cdots\!00 \) Copy content Toggle raw display
$29$ \( (T^{2} + \cdots - 13616383922300)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} + \cdots + 16415447040000)^{2} \) Copy content Toggle raw display
$37$ \( T^{4} + \cdots + 98\!\cdots\!00 \) Copy content Toggle raw display
$41$ \( (T^{2} + \cdots + 38475315093220)^{2} \) Copy content Toggle raw display
$43$ \( T^{4} + \cdots + 64\!\cdots\!36 \) Copy content Toggle raw display
$47$ \( T^{4} + \cdots + 34\!\cdots\!76 \) Copy content Toggle raw display
$53$ \( T^{4} + \cdots + 21\!\cdots\!00 \) Copy content Toggle raw display
$59$ \( (T^{2} + \cdots - 99\!\cdots\!20)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} + \cdots + 28\!\cdots\!96)^{2} \) Copy content Toggle raw display
$67$ \( T^{4} + \cdots + 40\!\cdots\!96 \) Copy content Toggle raw display
$71$ \( (T^{2} + \cdots - 147594805309376)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} + \cdots + 16\!\cdots\!00 \) Copy content Toggle raw display
$79$ \( (T^{2} + \cdots - 19\!\cdots\!00)^{2} \) Copy content Toggle raw display
$83$ \( T^{4} + \cdots + 36\!\cdots\!64 \) Copy content Toggle raw display
$89$ \( (T^{2} + \cdots + 13\!\cdots\!20)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + \cdots + 47\!\cdots\!96 \) Copy content Toggle raw display
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