Properties

Label 891.2.u.a
Level $891$
Weight $2$
Character orbit 891.u
Analytic conductor $7.115$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [891,2,Mod(107,891)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(891, base_ring=CyclotomicField(30))
 
chi = DirichletCharacter(H, H._module([5, 9]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("891.107");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 891 = 3^{4} \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 891.u (of order \(30\), degree \(8\), not 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: \(7.11467082010\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(2\) over \(\Q(\zeta_{30})\)
Coefficient field: \(\Q(\zeta_{60})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} + x^{14} - x^{10} - x^{8} - x^{6} + x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 33)
Sato-Tate group: $\mathrm{SU}(2)[C_{30}]$

$q$-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 a primitive root of unity \(\zeta_{60}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\zeta_{60}^{11} + \zeta_{60}^{5}) q^{2} + (\zeta_{60}^{12} + \cdots - \zeta_{60}^{2}) q^{4}+ \cdots + (2 \zeta_{60}^{15} + \cdots + 2 \zeta_{60}) q^{8}+O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{60}^{11} + \zeta_{60}^{5}) q^{2} + (\zeta_{60}^{12} + \cdots - \zeta_{60}^{2}) q^{4}+ \cdots + (4 \zeta_{60}^{15} + \cdots + 8 \zeta_{60}) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 6 q^{4} + 10 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 6 q^{4} + 10 q^{7} + 10 q^{13} - 2 q^{16} + 40 q^{19} - 20 q^{22} - 12 q^{25} + 20 q^{31} + 40 q^{34} - 12 q^{37} + 60 q^{46} - 16 q^{49} - 10 q^{52} - 64 q^{55} - 20 q^{58} + 10 q^{61} - 68 q^{64} + 4 q^{67} - 10 q^{70} - 50 q^{79} - 20 q^{82} - 10 q^{85} - 50 q^{88} - 20 q^{91} + 30 q^{94} - 6 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/891\mathbb{Z}\right)^\times\).

\(n\) \(244\) \(650\)
\(\chi(n)\) \(\zeta_{60}^{6}\) \(\zeta_{60}^{10}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
107.1
−0.207912 0.978148i
0.207912 + 0.978148i
−0.406737 0.913545i
0.406737 + 0.913545i
−0.994522 + 0.104528i
0.994522 0.104528i
−0.994522 0.104528i
0.994522 + 0.104528i
−0.207912 + 0.978148i
0.207912 0.978148i
−0.406737 + 0.913545i
0.406737 0.913545i
0.743145 0.669131i
−0.743145 + 0.669131i
0.743145 + 0.669131i
−0.743145 0.669131i
−0.122881 1.16913i 0 0.604528 0.128496i 0.379874 + 0.0399263i 0 2.28716 2.05937i −0.951057 2.92705i 0 0.449028i
107.2 0.122881 + 1.16913i 0 0.604528 0.128496i −0.379874 0.0399263i 0 2.28716 2.05937i 0.951057 + 2.92705i 0 0.449028i
134.1 −1.86055 + 0.395472i 0 1.47815 0.658114i 0.544320 2.56082i 0 −0.722562 0.0759444i 0.587785 0.427051i 0 4.97980i
134.2 1.86055 0.395472i 0 1.47815 0.658114i −0.544320 + 2.56082i 0 −0.722562 0.0759444i −0.587785 + 0.427051i 0 4.97980i
215.1 −1.27276 + 1.41355i 0 −0.169131 1.60917i −1.94558 + 1.75181i 0 0.295511 0.663730i −0.587785 0.427051i 0 4.97980i
215.2 1.27276 1.41355i 0 −0.169131 1.60917i 1.94558 1.75181i 0 0.295511 0.663730i 0.587785 + 0.427051i 0 4.97980i
431.1 −1.27276 1.41355i 0 −0.169131 + 1.60917i −1.94558 1.75181i 0 0.295511 + 0.663730i −0.587785 + 0.427051i 0 4.97980i
431.2 1.27276 + 1.41355i 0 −0.169131 + 1.60917i 1.94558 + 1.75181i 0 0.295511 + 0.663730i 0.587785 0.427051i 0 4.97980i
458.1 −0.122881 + 1.16913i 0 0.604528 + 0.128496i 0.379874 0.0399263i 0 2.28716 + 2.05937i −0.951057 + 2.92705i 0 0.449028i
458.2 0.122881 1.16913i 0 0.604528 + 0.128496i −0.379874 + 0.0399263i 0 2.28716 + 2.05937i 0.951057 2.92705i 0 0.449028i
512.1 −1.86055 0.395472i 0 1.47815 + 0.658114i 0.544320 + 2.56082i 0 −0.722562 + 0.0759444i 0.587785 + 0.427051i 0 4.97980i
512.2 1.86055 + 0.395472i 0 1.47815 + 0.658114i −0.544320 2.56082i 0 −0.722562 + 0.0759444i −0.587785 0.427051i 0 4.97980i
701.1 −1.07394 0.478148i 0 −0.413545 0.459289i 0.155360 + 0.348943i 0 0.639886 + 3.01043i 0.951057 + 2.92705i 0 0.449028i
701.2 1.07394 + 0.478148i 0 −0.413545 0.459289i −0.155360 0.348943i 0 0.639886 + 3.01043i −0.951057 2.92705i 0 0.449028i
755.1 −1.07394 + 0.478148i 0 −0.413545 + 0.459289i 0.155360 0.348943i 0 0.639886 3.01043i 0.951057 2.92705i 0 0.449028i
755.2 1.07394 0.478148i 0 −0.413545 + 0.459289i −0.155360 + 0.348943i 0 0.639886 3.01043i −0.951057 + 2.92705i 0 0.449028i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 107.2
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
9.c even 3 1 inner
9.d odd 6 1 inner
11.d odd 10 1 inner
33.f even 10 1 inner
99.o odd 30 1 inner
99.p even 30 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 891.2.u.a 16
3.b odd 2 1 inner 891.2.u.a 16
9.c even 3 1 33.2.f.a 8
9.c even 3 1 inner 891.2.u.a 16
9.d odd 6 1 33.2.f.a 8
9.d odd 6 1 inner 891.2.u.a 16
11.d odd 10 1 inner 891.2.u.a 16
33.f even 10 1 inner 891.2.u.a 16
36.f odd 6 1 528.2.bn.c 8
36.h even 6 1 528.2.bn.c 8
45.h odd 6 1 825.2.bi.b 8
45.j even 6 1 825.2.bi.b 8
45.k odd 12 1 825.2.bs.a 8
45.k odd 12 1 825.2.bs.d 8
45.l even 12 1 825.2.bs.a 8
45.l even 12 1 825.2.bs.d 8
99.g even 6 1 363.2.f.b 8
99.h odd 6 1 363.2.f.b 8
99.m even 15 1 363.2.d.f 8
99.m even 15 1 363.2.f.b 8
99.m even 15 1 363.2.f.d 8
99.m even 15 1 363.2.f.e 8
99.n odd 30 1 363.2.d.f 8
99.n odd 30 1 363.2.f.b 8
99.n odd 30 1 363.2.f.d 8
99.n odd 30 1 363.2.f.e 8
99.o odd 30 1 33.2.f.a 8
99.o odd 30 1 363.2.d.f 8
99.o odd 30 1 363.2.f.d 8
99.o odd 30 1 363.2.f.e 8
99.o odd 30 1 inner 891.2.u.a 16
99.p even 30 1 33.2.f.a 8
99.p even 30 1 363.2.d.f 8
99.p even 30 1 363.2.f.d 8
99.p even 30 1 363.2.f.e 8
99.p even 30 1 inner 891.2.u.a 16
396.bb odd 30 1 528.2.bn.c 8
396.bf even 30 1 528.2.bn.c 8
495.bo even 30 1 825.2.bi.b 8
495.br odd 30 1 825.2.bi.b 8
495.bs even 60 1 825.2.bs.a 8
495.bs even 60 1 825.2.bs.d 8
495.bu odd 60 1 825.2.bs.a 8
495.bu odd 60 1 825.2.bs.d 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
33.2.f.a 8 9.c even 3 1
33.2.f.a 8 9.d odd 6 1
33.2.f.a 8 99.o odd 30 1
33.2.f.a 8 99.p even 30 1
363.2.d.f 8 99.m even 15 1
363.2.d.f 8 99.n odd 30 1
363.2.d.f 8 99.o odd 30 1
363.2.d.f 8 99.p even 30 1
363.2.f.b 8 99.g even 6 1
363.2.f.b 8 99.h odd 6 1
363.2.f.b 8 99.m even 15 1
363.2.f.b 8 99.n odd 30 1
363.2.f.d 8 99.m even 15 1
363.2.f.d 8 99.n odd 30 1
363.2.f.d 8 99.o odd 30 1
363.2.f.d 8 99.p even 30 1
363.2.f.e 8 99.m even 15 1
363.2.f.e 8 99.n odd 30 1
363.2.f.e 8 99.o odd 30 1
363.2.f.e 8 99.p even 30 1
528.2.bn.c 8 36.f odd 6 1
528.2.bn.c 8 36.h even 6 1
528.2.bn.c 8 396.bb odd 30 1
528.2.bn.c 8 396.bf even 30 1
825.2.bi.b 8 45.h odd 6 1
825.2.bi.b 8 45.j even 6 1
825.2.bi.b 8 495.bo even 30 1
825.2.bi.b 8 495.br odd 30 1
825.2.bs.a 8 45.k odd 12 1
825.2.bs.a 8 45.l even 12 1
825.2.bs.a 8 495.bs even 60 1
825.2.bs.a 8 495.bu odd 60 1
825.2.bs.d 8 45.k odd 12 1
825.2.bs.d 8 45.l even 12 1
825.2.bs.d 8 495.bs even 60 1
825.2.bs.d 8 495.bu odd 60 1
891.2.u.a 16 1.a even 1 1 trivial
891.2.u.a 16 3.b odd 2 1 inner
891.2.u.a 16 9.c even 3 1 inner
891.2.u.a 16 9.d odd 6 1 inner
891.2.u.a 16 11.d odd 10 1 inner
891.2.u.a 16 33.f even 10 1 inner
891.2.u.a 16 99.o odd 30 1 inner
891.2.u.a 16 99.p even 30 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{16} - 5T_{2}^{14} + 15T_{2}^{12} - 50T_{2}^{10} + 75T_{2}^{8} + 250T_{2}^{6} - 250T_{2}^{4} + 625 \) acting on \(S_{2}^{\mathrm{new}}(891, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} - 5 T^{14} + \cdots + 625 \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( T^{16} + 11 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( (T^{8} - 5 T^{7} + 20 T^{6} + \cdots + 25)^{2} \) Copy content Toggle raw display
$11$ \( T^{16} + \cdots + 214358881 \) Copy content Toggle raw display
$13$ \( (T^{8} - 5 T^{7} + 20 T^{6} + \cdots + 25)^{2} \) Copy content Toggle raw display
$17$ \( (T^{8} + 250 T^{4} + \cdots + 15625)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 10 T^{3} + \cdots + 125)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} - 42 T^{6} + \cdots + 14641)^{2} \) Copy content Toggle raw display
$29$ \( T^{16} - 160 T^{12} + \cdots + 40960000 \) Copy content Toggle raw display
$31$ \( (T^{8} - 10 T^{7} + \cdots + 625)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 3 T^{3} + 9 T^{2} + \cdots + 81)^{4} \) Copy content Toggle raw display
$41$ \( T^{16} + 5 T^{14} + \cdots + 625 \) Copy content Toggle raw display
$43$ \( (T^{8} - 50 T^{6} + \cdots + 15625)^{2} \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 191707312997281 \) Copy content Toggle raw display
$53$ \( (T^{8} - 36 T^{6} + \cdots + 6561)^{2} \) Copy content Toggle raw display
$59$ \( T^{16} - 4 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$61$ \( (T^{8} - 5 T^{7} + \cdots + 15625)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} - T^{3} + 62 T^{2} + \cdots + 3721)^{4} \) Copy content Toggle raw display
$71$ \( (T^{8} - 155 T^{6} + \cdots + 9150625)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 2560 T + 20480)^{4} \) Copy content Toggle raw display
$79$ \( (T^{8} + 25 T^{7} + \cdots + 3258025)^{2} \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 49\!\cdots\!25 \) Copy content Toggle raw display
$89$ \( (T^{4} + 90 T^{2} + 25)^{4} \) Copy content Toggle raw display
$97$ \( (T^{8} + 3 T^{7} + \cdots + 707281)^{2} \) Copy content Toggle raw display
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