Properties

Label 225.5.c.a
Level $225$
Weight $5$
Character orbit 225.c
Analytic conductor $23.258$
Analytic rank $0$
Dimension $2$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [225,5,Mod(26,225)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(225, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0]))
 
N = Newforms(chi, 5, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("225.26");
 
S:= CuspForms(chi, 5);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 225 = 3^{2} \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 5 \)
Character orbit: \([\chi]\) \(=\) 225.c (of order \(2\), degree \(1\), minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(23.2582416939\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-2}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 3 \)
Twist minimal: no (minimal twist has level 9)
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = 3\sqrt{-2}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta q^{2} - 2 q^{4} + 28 q^{7} + 14 \beta q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta q^{2} - 2 q^{4} + 28 q^{7} + 14 \beta q^{8} - 4 \beta q^{11} + 112 q^{13} + 28 \beta q^{14} - 284 q^{16} - 21 \beta q^{17} + 560 q^{19} + 72 q^{22} + 188 \beta q^{23} + 112 \beta q^{26} - 56 q^{28} + 233 \beta q^{29} - 364 q^{31} - 60 \beta q^{32} + 378 q^{34} + 826 q^{37} + 560 \beta q^{38} + 427 \beta q^{41} - 1736 q^{43} + 8 \beta q^{44} - 3384 q^{46} - 308 \beta q^{47} - 1617 q^{49} - 224 q^{52} + 423 \beta q^{53} + 392 \beta q^{56} - 4194 q^{58} - 1064 \beta q^{59} + 2618 q^{61} - 364 \beta q^{62} - 3464 q^{64} + 3784 q^{67} + 42 \beta q^{68} + 2028 \beta q^{71} - 6608 q^{73} + 826 \beta q^{74} - 1120 q^{76} - 112 \beta q^{77} - 4276 q^{79} - 7686 q^{82} + 28 \beta q^{83} - 1736 \beta q^{86} + 1008 q^{88} - 1029 \beta q^{89} + 3136 q^{91} - 376 \beta q^{92} + 5544 q^{94} + 5824 q^{97} - 1617 \beta q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 4 q^{4} + 56 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 4 q^{4} + 56 q^{7} + 224 q^{13} - 568 q^{16} + 1120 q^{19} + 144 q^{22} - 112 q^{28} - 728 q^{31} + 756 q^{34} + 1652 q^{37} - 3472 q^{43} - 6768 q^{46} - 3234 q^{49} - 448 q^{52} - 8388 q^{58} + 5236 q^{61} - 6928 q^{64} + 7568 q^{67} - 13216 q^{73} - 2240 q^{76} - 8552 q^{79} - 15372 q^{82} + 2016 q^{88} + 6272 q^{91} + 11088 q^{94} + 11648 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/225\mathbb{Z}\right)^\times\).

\(n\) \(101\) \(127\)
\(\chi(n)\) \(-1\) \(1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
26.1
1.41421i
1.41421i
4.24264i 0 −2.00000 0 0 28.0000 59.3970i 0 0
26.2 4.24264i 0 −2.00000 0 0 28.0000 59.3970i 0 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 225.5.c.a 2
3.b odd 2 1 inner 225.5.c.a 2
5.b even 2 1 9.5.b.a 2
5.c odd 4 2 225.5.d.a 4
15.d odd 2 1 9.5.b.a 2
15.e even 4 2 225.5.d.a 4
20.d odd 2 1 144.5.e.c 2
35.c odd 2 1 441.5.b.a 2
40.e odd 2 1 576.5.e.g 2
40.f even 2 1 576.5.e.d 2
45.h odd 6 2 81.5.d.c 4
45.j even 6 2 81.5.d.c 4
60.h even 2 1 144.5.e.c 2
105.g even 2 1 441.5.b.a 2
120.i odd 2 1 576.5.e.d 2
120.m even 2 1 576.5.e.g 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
9.5.b.a 2 5.b even 2 1
9.5.b.a 2 15.d odd 2 1
81.5.d.c 4 45.h odd 6 2
81.5.d.c 4 45.j even 6 2
144.5.e.c 2 20.d odd 2 1
144.5.e.c 2 60.h even 2 1
225.5.c.a 2 1.a even 1 1 trivial
225.5.c.a 2 3.b odd 2 1 inner
225.5.d.a 4 5.c odd 4 2
225.5.d.a 4 15.e even 4 2
441.5.b.a 2 35.c odd 2 1
441.5.b.a 2 105.g even 2 1
576.5.e.d 2 40.f even 2 1
576.5.e.d 2 120.i odd 2 1
576.5.e.g 2 40.e odd 2 1
576.5.e.g 2 120.m even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{5}^{\mathrm{new}}(225, [\chi])\):

\( T_{2}^{2} + 18 \) Copy content Toggle raw display
\( T_{7} - 28 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} + 18 \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} \) Copy content Toggle raw display
$7$ \( (T - 28)^{2} \) Copy content Toggle raw display
$11$ \( T^{2} + 288 \) Copy content Toggle raw display
$13$ \( (T - 112)^{2} \) Copy content Toggle raw display
$17$ \( T^{2} + 7938 \) Copy content Toggle raw display
$19$ \( (T - 560)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 636192 \) Copy content Toggle raw display
$29$ \( T^{2} + 977202 \) Copy content Toggle raw display
$31$ \( (T + 364)^{2} \) Copy content Toggle raw display
$37$ \( (T - 826)^{2} \) Copy content Toggle raw display
$41$ \( T^{2} + 3281922 \) Copy content Toggle raw display
$43$ \( (T + 1736)^{2} \) Copy content Toggle raw display
$47$ \( T^{2} + 1707552 \) Copy content Toggle raw display
$53$ \( T^{2} + 3220722 \) Copy content Toggle raw display
$59$ \( T^{2} + 20377728 \) Copy content Toggle raw display
$61$ \( (T - 2618)^{2} \) Copy content Toggle raw display
$67$ \( (T - 3784)^{2} \) Copy content Toggle raw display
$71$ \( T^{2} + 74030112 \) Copy content Toggle raw display
$73$ \( (T + 6608)^{2} \) Copy content Toggle raw display
$79$ \( (T + 4276)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 14112 \) Copy content Toggle raw display
$89$ \( T^{2} + 19059138 \) Copy content Toggle raw display
$97$ \( (T - 5824)^{2} \) Copy content Toggle raw display
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