Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [25,10,Mod(24,25)] 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("25.24"); S:= CuspForms(chi, 10); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(25, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([1])) N = Newforms(chi, 10, names="a")
 
Level: \( N \) \(=\) \( 25 = 5^{2} \)
Weight: \( k \) \(=\) \( 10 \)
Character orbit: \([\chi]\) \(=\) 25.b (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [2] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(1)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(12.8758959041\)
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: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 5)
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.

\(f(q)\) \(=\) \( q + 4 \beta q^{2} - 57 \beta q^{3} + 448 q^{4} + 912 q^{6} - 2121 \beta q^{7} + 3840 \beta q^{8} + 6687 q^{9} - 46208 q^{11} - 25536 \beta q^{12} - 57967 \beta q^{13} + 33936 q^{14} + 167936 q^{16} - 247421 \beta q^{17} + \cdots - 308992896 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + 896 q^{4} + 1824 q^{6} + 13374 q^{9} - 92416 q^{11} + 67872 q^{14} + 335872 q^{16} + 2017480 q^{19} - 967176 q^{21} + 1751040 q^{24} + 1854944 q^{26} - 8392780 q^{29} - 6730056 q^{31} + 7917472 q^{34}+ \cdots - 617985792 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/25\mathbb{Z}\right)^\times\).

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

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
24.1
− 1.00000i
1.00000i
− 8.00000i 114.000i 448.000 0 912.000 4242.00i − 7680.00i 6687.00 0
24.2 8.00000i − 114.000i 448.000 0 912.000 − 4242.00i 7680.00i 6687.00 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 25.10.b.a 2
3.b odd 2 1 225.10.b.d 2
4.b odd 2 1 400.10.c.e 2
5.b even 2 1 inner 25.10.b.a 2
5.c odd 4 1 5.10.a.a ✓ 1
5.c odd 4 1 25.10.a.a 1
15.d odd 2 1 225.10.b.d 2
15.e even 4 1 45.10.a.c 1
15.e even 4 1 225.10.a.b 1
20.d odd 2 1 400.10.c.e 2
20.e even 4 1 80.10.a.d 1
20.e even 4 1 400.10.a.c 1
35.f even 4 1 245.10.a.a 1
40.i odd 4 1 320.10.a.h 1
40.k even 4 1 320.10.a.c 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
5.10.a.a ✓ 1 5.c odd 4 1
25.10.a.a 1 5.c odd 4 1
25.10.b.a 2 1.a even 1 1 trivial
25.10.b.a 2 5.b even 2 1 inner
45.10.a.c 1 15.e even 4 1
80.10.a.d 1 20.e even 4 1
225.10.a.b 1 15.e even 4 1
225.10.b.d 2 3.b odd 2 1
225.10.b.d 2 15.d odd 2 1
245.10.a.a 1 35.f even 4 1
320.10.a.c 1 40.k even 4 1
320.10.a.h 1 40.i odd 4 1
400.10.a.c 1 20.e even 4 1
400.10.c.e 2 4.b odd 2 1
400.10.c.e 2 20.d odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{2} + 64 \) acting on \(S_{10}^{\mathrm{new}}(25, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + 64 \) Copy content Toggle raw display
$3$ \( T^{2} + 12996 \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( T^{2} + 17994564 \) Copy content Toggle raw display
$11$ \( (T + 46208)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 13440692356 \) Copy content Toggle raw display
$17$ \( T^{2} + 244868604964 \) Copy content Toggle raw display
$19$ \( (T - 1008740)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 283613762916 \) Copy content Toggle raw display
$29$ \( (T + 4196390)^{2} \) Copy content Toggle raw display
$31$ \( (T + 3365028)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 222945451724164 \) Copy content Toggle raw display
$41$ \( (T - 11056262)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 40918973478436 \) Copy content Toggle raw display
$47$ \( T^{2} + 12\!\cdots\!64 \) Copy content Toggle raw display
$53$ \( T^{2} + 15\!\cdots\!96 \) Copy content Toggle raw display
$59$ \( (T - 85185620)^{2} \) Copy content Toggle raw display
$61$ \( (T - 45748642)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} + 20\!\cdots\!64 \) Copy content Toggle raw display
$71$ \( (T + 189967468)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 16\!\cdots\!16 \) Copy content Toggle raw display
$79$ \( (T + 95040840)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 68\!\cdots\!76 \) Copy content Toggle raw display
$89$ \( (T - 19938630)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 380380973276164 \) Copy content Toggle raw display
show more
show less