Properties

Label 91.2.u.b
Level $91$
Weight $2$
Character orbit 91.u
Analytic conductor $0.727$
Analytic rank $0$
Dimension $12$
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] = [91,2,Mod(30,91)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(91, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([2, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("91.30");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 91 = 7 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 91.u (of order \(6\), degree \(2\), 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: \(0.726638658394\)
Analytic rank: \(0\)
Dimension: \(12\)
Relative dimension: \(6\) over \(\Q(\zeta_{6})\)
Coefficient field: 12.0.2346760387617129.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{12} - 3 x^{11} + x^{10} + 10 x^{9} - 15 x^{8} - 10 x^{7} + 45 x^{6} - 20 x^{5} - 60 x^{4} + 80 x^{3} + 16 x^{2} - 96 x + 64 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 basis \(1,\beta_1,\ldots,\beta_{11}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{10} q^{2} + (\beta_{8} + \beta_{3} - \beta_1 + 1) q^{3} + (\beta_{11} - \beta_{7} + \beta_{4} + \beta_1) q^{4} + (\beta_{10} - \beta_{9} - \beta_{8} + \beta_{6} + \beta_1) q^{5} + ( - \beta_{11} + \beta_{7} - \beta_{6} + \beta_{5} - \beta_{4} - 1) q^{6} + (\beta_{11} + \beta_{8} - \beta_{7} + \beta_{6} + \beta_{4} - \beta_{3} + \beta_{2}) q^{7} + (\beta_{11} - \beta_{9} + \beta_{7} - \beta_{5} - \beta_{4} - \beta_{3} - \beta_{2} - \beta_1) q^{8} + ( - \beta_{11} - \beta_{4} + \beta_{3} - \beta_{2}) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{10} q^{2} + (\beta_{8} + \beta_{3} - \beta_1 + 1) q^{3} + (\beta_{11} - \beta_{7} + \beta_{4} + \beta_1) q^{4} + (\beta_{10} - \beta_{9} - \beta_{8} + \beta_{6} + \beta_1) q^{5} + ( - \beta_{11} + \beta_{7} - \beta_{6} + \beta_{5} - \beta_{4} - 1) q^{6} + (\beta_{11} + \beta_{8} - \beta_{7} + \beta_{6} + \beta_{4} - \beta_{3} + \beta_{2}) q^{7} + (\beta_{11} - \beta_{9} + \beta_{7} - \beta_{5} - \beta_{4} - \beta_{3} - \beta_{2} - \beta_1) q^{8} + ( - \beta_{11} - \beta_{4} + \beta_{3} - \beta_{2}) q^{9} + ( - \beta_{8} + \beta_{6} - 2) q^{10} + ( - \beta_{11} - \beta_{9} + \beta_{8} - \beta_{7} + \beta_{5} - \beta_{4} + \beta_{2} - 1) q^{11} + ( - \beta_{11} + \beta_{10} + \beta_{9} - \beta_{8} + \beta_{7} - \beta_{6} - \beta_{4}) q^{12} + ( - \beta_{11} + \beta_{10} + 2 \beta_{7} - 2 \beta_{6} - \beta_{4} - \beta_{3} - \beta_{2}) q^{13} + ( - 2 \beta_{10} + \beta_{9} - \beta_{7} + \beta_{6} - \beta_{5} - \beta_{4} - \beta_1) q^{14} + (\beta_{11} - \beta_{7} + 2 \beta_{6} - 2 \beta_{5} + 2 \beta_{4} + 2 \beta_{3} + 2 \beta_{2} + \cdots + 1) q^{15}+ \cdots + ( - 2 \beta_{11} - 4 \beta_{8} - 2 \beta_{7} - 4 \beta_{6} + 2 \beta_{5} - 8 \beta_{4} + \cdots - 5) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 12 q + 6 q^{3} + 4 q^{4} + 3 q^{5} - 9 q^{6} + 3 q^{7} + 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 12 q + 6 q^{3} + 4 q^{4} + 3 q^{5} - 9 q^{6} + 3 q^{7} + 2 q^{9} - 24 q^{10} - q^{12} - 2 q^{13} + 4 q^{14} - 12 q^{15} - 8 q^{16} + 17 q^{17} - 3 q^{18} - 3 q^{20} - 21 q^{21} - 15 q^{22} + 3 q^{23} - 5 q^{25} - 9 q^{26} + 12 q^{27} + 27 q^{28} - q^{29} - 22 q^{30} - 18 q^{31} + 18 q^{32} + 18 q^{35} - 13 q^{36} + 15 q^{37} + 19 q^{38} - q^{39} - q^{40} - 6 q^{41} - 8 q^{42} + 11 q^{43} + 33 q^{44} - 9 q^{45} - 30 q^{46} + 15 q^{47} + 19 q^{48} + 9 q^{49} + 18 q^{50} + 4 q^{51} + 47 q^{52} - 8 q^{53} + 6 q^{54} - 15 q^{55} + 27 q^{59} + 30 q^{60} - 10 q^{61} + 41 q^{62} - 54 q^{63} + 2 q^{64} - 3 q^{65} - 34 q^{66} - 11 q^{68} + 7 q^{69} - 3 q^{70} + 30 q^{71} - 42 q^{73} - 33 q^{74} + q^{75} - 45 q^{76} - 19 q^{77} + 44 q^{78} - 35 q^{79} - 28 q^{81} - 10 q^{82} + 3 q^{84} - 21 q^{85} + 57 q^{86} + 10 q^{87} + 28 q^{88} + 48 q^{89} - 16 q^{91} - 66 q^{92} - 81 q^{93} - 2 q^{94} + 2 q^{95} - 21 q^{96} - 3 q^{97} - 36 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{12} - 3 x^{11} + x^{10} + 10 x^{9} - 15 x^{8} - 10 x^{7} + 45 x^{6} - 20 x^{5} - 60 x^{4} + 80 x^{3} + 16 x^{2} - 96 x + 64 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{11} - 13 \nu^{10} - 9 \nu^{9} + 72 \nu^{8} - 91 \nu^{7} - 164 \nu^{6} + 313 \nu^{5} + 42 \nu^{4} - 620 \nu^{3} + 344 \nu^{2} + 608 \nu - 800 ) / 224 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( - 9 \nu^{11} + 5 \nu^{10} + 25 \nu^{9} - 32 \nu^{8} - 21 \nu^{7} + 132 \nu^{6} - 73 \nu^{5} - 154 \nu^{4} + 260 \nu^{3} + 40 \nu^{2} - 320 \nu + 256 ) / 224 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( - 11 \nu^{11} + 17 \nu^{10} + 29 \nu^{9} - 78 \nu^{8} + 21 \nu^{7} + 166 \nu^{6} - 167 \nu^{5} - 140 \nu^{4} + 380 \nu^{3} - 88 \nu^{2} - 304 \nu + 288 ) / 224 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( - 13 \nu^{11} + 29 \nu^{10} + 5 \nu^{9} - 96 \nu^{8} + 91 \nu^{7} + 200 \nu^{6} - 289 \nu^{5} - 126 \nu^{4} + 584 \nu^{3} - 160 \nu^{2} - 512 \nu + 544 ) / 224 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 8 \nu^{11} - 13 \nu^{10} - 9 \nu^{9} + 51 \nu^{8} - 42 \nu^{7} - 101 \nu^{6} + 194 \nu^{5} + 7 \nu^{4} - 340 \nu^{3} + 260 \nu^{2} + 216 \nu - 464 ) / 112 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 13 \nu^{11} - 57 \nu^{10} - 5 \nu^{9} + 208 \nu^{8} - 231 \nu^{7} - 396 \nu^{6} + 821 \nu^{5} + 42 \nu^{4} - 1452 \nu^{3} + 720 \nu^{2} + 1184 \nu - 1664 ) / 224 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( 2 \nu^{11} - 5 \nu^{10} - 4 \nu^{9} + 18 \nu^{8} - 7 \nu^{7} - 41 \nu^{6} + 45 \nu^{5} + 35 \nu^{4} - 99 \nu^{3} + 16 \nu^{2} + 96 \nu - 88 ) / 28 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 3 \nu^{11} - 4 \nu^{10} - 6 \nu^{9} + 20 \nu^{8} - 44 \nu^{6} + 43 \nu^{5} + 56 \nu^{4} - 82 \nu^{3} + 3 \nu^{2} + 102 \nu - 48 ) / 28 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( - 15 \nu^{11} + 20 \nu^{10} + 30 \nu^{9} - 121 \nu^{8} + 21 \nu^{7} + 269 \nu^{6} - 271 \nu^{5} - 273 \nu^{4} + 634 \nu^{3} - 64 \nu^{2} - 664 \nu + 464 ) / 112 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( - 17 \nu^{11} + 39 \nu^{10} + 13 \nu^{9} - 160 \nu^{8} + 133 \nu^{7} + 310 \nu^{6} - 547 \nu^{5} - 168 \nu^{4} + 1062 \nu^{3} - 500 \nu^{2} - 872 \nu + 1056 ) / 112 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{8} - \beta_{7} + \beta_{6} + \beta_{4} + \beta_{3} + \beta_{2} + 1 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{11} + \beta_{9} + \beta_{6} - \beta_{5} + \beta_{4} + \beta_{3} + \beta_{2} \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( -\beta_{11} + \beta_{10} + \beta_{9} - \beta_{7} - \beta_{6} + \beta_{2} - \beta _1 - 1 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( \beta_{10} + 2\beta_{9} - 2\beta_{8} + 2\beta_{7} - \beta_{6} + \beta_{5} - 2\beta_{3} - \beta_{2} - \beta_1 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( - 4 \beta_{11} + 2 \beta_{10} - 3 \beta_{8} + \beta_{7} - 5 \beta_{6} + 4 \beta_{5} - 7 \beta_{4} - 2 \beta_{3} - 4 \beta_{2} + 3 \beta _1 - 6 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( - \beta_{11} - \beta_{10} - \beta_{9} + 3 \beta_{8} + \beta_{7} + \beta_{6} + 6 \beta_{5} + 4 \beta_{4} - \beta_{3} - 4 \beta_{2} + \beta_1 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( -4\beta_{10} - 2\beta_{9} - \beta_{8} + 2\beta_{5} - 4\beta_{4} + 8\beta_{3} - 2\beta_{2} + 3\beta _1 - 6 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( 2 \beta_{11} - 6 \beta_{10} - 2 \beta_{9} + 6 \beta_{8} - 3 \beta_{7} + 7 \beta_{6} - 4 \beta_{5} + 21 \beta_{4} + 6 \beta_{3} - 3 \beta _1 + 4 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( 5 \beta_{11} - 9 \beta_{10} + \beta_{9} - 16 \beta_{8} + \beta_{7} + 3 \beta_{6} - 8 \beta_{5} + 2 \beta_{4} + 2 \beta_{3} + 7 \beta_{2} - 6 \beta _1 + 1 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( - 2 \beta_{11} - \beta_{10} - 19 \beta_{8} + \beta_{7} + 4 \beta_{6} - 15 \beta_{5} - 5 \beta_{4} - 13 \beta_{3} - 14 \beta_{2} + 9 \beta _1 - 5 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/91\mathbb{Z}\right)^\times\).

\(n\) \(15\) \(66\)
\(\chi(n)\) \(-\beta_{4}\) \(-1 - \beta_{4}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
30.1
1.32725 0.488273i
−1.38488 0.286553i
0.655911 + 1.25291i
−1.18541 + 0.771231i
0.874681 1.11128i
1.21245 + 0.727987i
1.32725 + 0.488273i
−1.38488 + 0.286553i
0.655911 1.25291i
−1.18541 0.771231i
0.874681 + 1.11128i
1.21245 0.727987i
−2.24179 + 1.29430i 0.518466 2.35043 4.07106i 1.39608 + 0.806027i −1.16229 + 0.671051i 2.62954 + 0.292422i 6.99143i −2.73119 −4.17296
30.2 −1.19430 + 0.689527i 2.88120 −0.0491037 + 0.0850501i 0.697972 + 0.402974i −3.44101 + 1.98667i −2.25549 1.38302i 2.89354i 5.30133 −1.11145
30.3 −0.156598 + 0.0904119i −1.82601 −0.983651 + 1.70373i 2.32670 + 1.34332i 0.285950 0.165093i −0.393717 + 2.61629i 0.717383i 0.334323 −0.485809
30.4 0.433001 0.249993i 0.849601 −0.875007 + 1.51556i 0.902810 + 0.521238i 0.367878 0.212395i 1.52469 2.16225i 1.87496i −2.27818 0.521224
30.5 1.16500 0.672613i 2.05010 −0.0951832 + 0.164862i −3.08979 1.78389i 2.38837 1.37893i −2.09638 + 1.61406i 2.94654i 1.20292 −4.79947
30.6 1.99469 1.15163i −1.47336 1.65252 2.86225i −0.733776 0.423646i −2.93889 + 1.69677i 2.09135 + 1.62057i 3.00585i −0.829208 −1.95154
88.1 −2.24179 1.29430i 0.518466 2.35043 + 4.07106i 1.39608 0.806027i −1.16229 0.671051i 2.62954 0.292422i 6.99143i −2.73119 −4.17296
88.2 −1.19430 0.689527i 2.88120 −0.0491037 0.0850501i 0.697972 0.402974i −3.44101 1.98667i −2.25549 + 1.38302i 2.89354i 5.30133 −1.11145
88.3 −0.156598 0.0904119i −1.82601 −0.983651 1.70373i 2.32670 1.34332i 0.285950 + 0.165093i −0.393717 2.61629i 0.717383i 0.334323 −0.485809
88.4 0.433001 + 0.249993i 0.849601 −0.875007 1.51556i 0.902810 0.521238i 0.367878 + 0.212395i 1.52469 + 2.16225i 1.87496i −2.27818 0.521224
88.5 1.16500 + 0.672613i 2.05010 −0.0951832 0.164862i −3.08979 + 1.78389i 2.38837 + 1.37893i −2.09638 1.61406i 2.94654i 1.20292 −4.79947
88.6 1.99469 + 1.15163i −1.47336 1.65252 + 2.86225i −0.733776 + 0.423646i −2.93889 1.69677i 2.09135 1.62057i 3.00585i −0.829208 −1.95154
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 30.6
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
91.u even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 91.2.u.b yes 12
3.b odd 2 1 819.2.do.e 12
7.b odd 2 1 637.2.u.g 12
7.c even 3 1 91.2.k.b 12
7.c even 3 1 637.2.q.g 12
7.d odd 6 1 637.2.k.i 12
7.d odd 6 1 637.2.q.i 12
13.e even 6 1 91.2.k.b 12
13.f odd 12 2 1183.2.e.j 24
21.h odd 6 1 819.2.bm.f 12
39.h odd 6 1 819.2.bm.f 12
91.k even 6 1 637.2.q.g 12
91.l odd 6 1 637.2.q.i 12
91.p odd 6 1 637.2.u.g 12
91.t odd 6 1 637.2.k.i 12
91.u even 6 1 inner 91.2.u.b yes 12
91.w even 12 2 8281.2.a.co 12
91.x odd 12 2 1183.2.e.j 24
91.bd odd 12 2 8281.2.a.cp 12
273.x odd 6 1 819.2.do.e 12
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
91.2.k.b 12 7.c even 3 1
91.2.k.b 12 13.e even 6 1
91.2.u.b yes 12 1.a even 1 1 trivial
91.2.u.b yes 12 91.u even 6 1 inner
637.2.k.i 12 7.d odd 6 1
637.2.k.i 12 91.t odd 6 1
637.2.q.g 12 7.c even 3 1
637.2.q.g 12 91.k even 6 1
637.2.q.i 12 7.d odd 6 1
637.2.q.i 12 91.l odd 6 1
637.2.u.g 12 7.b odd 2 1
637.2.u.g 12 91.p odd 6 1
819.2.bm.f 12 21.h odd 6 1
819.2.bm.f 12 39.h odd 6 1
819.2.do.e 12 3.b odd 2 1
819.2.do.e 12 273.x odd 6 1
1183.2.e.j 24 13.f odd 12 2
1183.2.e.j 24 91.x odd 12 2
8281.2.a.co 12 91.w even 12 2
8281.2.a.cp 12 91.bd odd 12 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{12} - 8T_{2}^{10} + 52T_{2}^{8} - 18T_{2}^{7} - 91T_{2}^{6} + 36T_{2}^{5} + 130T_{2}^{4} - 72T_{2}^{3} + 6T_{2} + 1 \) acting on \(S_{2}^{\mathrm{new}}(91, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{12} - 8 T^{10} + 52 T^{8} - 18 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( (T^{6} - 3 T^{5} - 5 T^{4} + 16 T^{3} + 4 T^{2} + \cdots + 7)^{2} \) Copy content Toggle raw display
$5$ \( T^{12} - 3 T^{11} - 8 T^{10} + 33 T^{9} + \cdots + 121 \) Copy content Toggle raw display
$7$ \( T^{12} - 3 T^{11} + 3 T^{9} + \cdots + 117649 \) Copy content Toggle raw display
$11$ \( T^{12} + 62 T^{10} + 1355 T^{8} + \cdots + 85849 \) Copy content Toggle raw display
$13$ \( T^{12} + 2 T^{11} - 18 T^{10} + \cdots + 4826809 \) Copy content Toggle raw display
$17$ \( T^{12} - 17 T^{11} + 193 T^{10} + \cdots + 361 \) Copy content Toggle raw display
$19$ \( T^{12} + 79 T^{10} + 1984 T^{8} + \cdots + 1 \) Copy content Toggle raw display
$23$ \( T^{12} - 3 T^{11} + 59 T^{10} + \cdots + 628849 \) Copy content Toggle raw display
$29$ \( T^{12} + T^{11} + 87 T^{10} + \cdots + 16072081 \) Copy content Toggle raw display
$31$ \( T^{12} + 18 T^{11} + \cdots + 241274089 \) Copy content Toggle raw display
$37$ \( T^{12} - 15 T^{11} + 39 T^{10} + \cdots + 123201 \) Copy content Toggle raw display
$41$ \( T^{12} + 6 T^{11} - 159 T^{10} + \cdots + 389707081 \) Copy content Toggle raw display
$43$ \( T^{12} - 11 T^{11} + \cdots + 418898089 \) Copy content Toggle raw display
$47$ \( T^{12} - 15 T^{11} + 92 T^{10} + \cdots + 121 \) Copy content Toggle raw display
$53$ \( T^{12} + 8 T^{11} + 102 T^{10} + \cdots + 289 \) Copy content Toggle raw display
$59$ \( T^{12} - 27 T^{11} + \cdots + 35582408689 \) Copy content Toggle raw display
$61$ \( (T^{6} + 5 T^{5} - 75 T^{4} - 354 T^{3} + \cdots + 1777)^{2} \) Copy content Toggle raw display
$67$ \( T^{12} + 439 T^{10} + \cdots + 5708255809 \) Copy content Toggle raw display
$71$ \( T^{12} - 30 T^{11} + \cdots + 639230089 \) Copy content Toggle raw display
$73$ \( T^{12} + 42 T^{11} + \cdots + 484396081 \) Copy content Toggle raw display
$79$ \( T^{12} + 35 T^{11} + \cdots + 65086724641 \) Copy content Toggle raw display
$83$ \( T^{12} + 463 T^{10} + \cdots + 402363481 \) Copy content Toggle raw display
$89$ \( T^{12} - 48 T^{11} + \cdots + 145033849 \) Copy content Toggle raw display
$97$ \( T^{12} + 3 T^{11} - 176 T^{10} + \cdots + 1681 \) Copy content Toggle raw display
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