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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [37,2,Mod(36,37)] 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("37.36"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(37, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 37 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 37.b (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(0)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(0.295446487479\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 2 \)
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 \(\beta = 2i\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta q^{2} - q^{3} - 2 q^{4} - \beta q^{5} - \beta q^{6} + 3 q^{7} - 2 q^{9} + 4 q^{10} - 3 q^{11} + 2 q^{12} - 3 \beta q^{13} + 3 \beta q^{14} + \beta q^{15} - 4 q^{16} + \beta q^{17} - 2 \beta q^{18} + \cdots + 6 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{3} - 4 q^{4} + 6 q^{7} - 4 q^{9} + 8 q^{10} - 6 q^{11} + 4 q^{12} - 8 q^{16} - 6 q^{21} + 2 q^{25} + 24 q^{26} + 10 q^{27} - 12 q^{28} - 8 q^{30} + 6 q^{33} - 8 q^{34} + 8 q^{36} - 2 q^{37} - 24 q^{38}+ \cdots + 12 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/37\mathbb{Z}\right)^\times\).

\(n\) \(2\)
\(\chi(n)\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
36.1
1.00000i
1.00000i
2.00000i −1.00000 −2.00000 2.00000i 2.00000i 3.00000 0 −2.00000 4.00000
36.2 2.00000i −1.00000 −2.00000 2.00000i 2.00000i 3.00000 0 −2.00000 4.00000
\(n\): 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 37.2.b.a 2
3.b odd 2 1 333.2.c.a 2
4.b odd 2 1 592.2.g.b 2
5.b even 2 1 925.2.c.b 2
5.c odd 4 1 925.2.d.a 2
5.c odd 4 1 925.2.d.d 2
8.b even 2 1 2368.2.g.f 2
8.d odd 2 1 2368.2.g.b 2
12.b even 2 1 5328.2.h.c 2
37.b even 2 1 inner 37.2.b.a 2
37.d odd 4 1 1369.2.a.a 1
37.d odd 4 1 1369.2.a.f 1
111.d odd 2 1 333.2.c.a 2
148.b odd 2 1 592.2.g.b 2
185.d even 2 1 925.2.c.b 2
185.h odd 4 1 925.2.d.a 2
185.h odd 4 1 925.2.d.d 2
296.e even 2 1 2368.2.g.f 2
296.h odd 2 1 2368.2.g.b 2
444.g even 2 1 5328.2.h.c 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
37.2.b.a 2 1.a even 1 1 trivial
37.2.b.a 2 37.b even 2 1 inner
333.2.c.a 2 3.b odd 2 1
333.2.c.a 2 111.d odd 2 1
592.2.g.b 2 4.b odd 2 1
592.2.g.b 2 148.b odd 2 1
925.2.c.b 2 5.b even 2 1
925.2.c.b 2 185.d even 2 1
925.2.d.a 2 5.c odd 4 1
925.2.d.a 2 185.h odd 4 1
925.2.d.d 2 5.c odd 4 1
925.2.d.d 2 185.h odd 4 1
1369.2.a.a 1 37.d odd 4 1
1369.2.a.f 1 37.d odd 4 1
2368.2.g.b 2 8.d odd 2 1
2368.2.g.b 2 296.h odd 2 1
2368.2.g.f 2 8.b even 2 1
2368.2.g.f 2 296.e even 2 1
5328.2.h.c 2 12.b even 2 1
5328.2.h.c 2 444.g even 2 1

Hecke kernels

This newform subspace is the entire newspace \(S_{2}^{\mathrm{new}}(37, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + 4 \) Copy content Toggle raw display
$3$ \( (T + 1)^{2} \) Copy content Toggle raw display
$5$ \( T^{2} + 4 \) Copy content Toggle raw display
$7$ \( (T - 3)^{2} \) Copy content Toggle raw display
$11$ \( (T + 3)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 36 \) Copy content Toggle raw display
$17$ \( T^{2} + 4 \) Copy content Toggle raw display
$19$ \( T^{2} + 36 \) Copy content Toggle raw display
$23$ \( T^{2} + 16 \) Copy content Toggle raw display
$29$ \( T^{2} + 16 \) Copy content Toggle raw display
$31$ \( T^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 2T + 37 \) Copy content Toggle raw display
$41$ \( (T + 3)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 36 \) Copy content Toggle raw display
$47$ \( (T - 3)^{2} \) Copy content Toggle raw display
$53$ \( (T - 9)^{2} \) Copy content Toggle raw display
$59$ \( T^{2} + 16 \) Copy content Toggle raw display
$61$ \( T^{2} \) Copy content Toggle raw display
$67$ \( (T + 12)^{2} \) Copy content Toggle raw display
$71$ \( (T + 3)^{2} \) Copy content Toggle raw display
$73$ \( (T - 9)^{2} \) Copy content Toggle raw display
$79$ \( T^{2} + 36 \) Copy content Toggle raw display
$83$ \( (T - 9)^{2} \) Copy content Toggle raw display
$89$ \( T^{2} + 196 \) Copy content Toggle raw display
$97$ \( T^{2} + 144 \) Copy content Toggle raw display
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