Properties

Label 1536.2.f.l
Level $1536$
Weight $2$
Character orbit 1536.f
Analytic conductor $12.265$
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] = [1536,2,Mod(767,1536)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1536, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1536.767");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1536 = 2^{9} \cdot 3 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1536.f (of order \(2\), degree \(1\), 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: \(12.2650217505\)
Analytic rank: \(0\)
Dimension: \(16\)
Coefficient field: 16.0.29960650073923649536.7
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 7x^{12} + 40x^{8} - 112x^{4} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 2^{24} \)
Twist minimal: yes
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 a basis \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{14} q^{3} + \beta_{4} q^{5} - \beta_{6} q^{7} - \beta_{12} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{14} q^{3} + \beta_{4} q^{5} - \beta_{6} q^{7} - \beta_{12} q^{9} - \beta_{2} q^{11} - \beta_{8} q^{13} + (\beta_{9} + \beta_{3}) q^{15} + ( - \beta_{13} + \beta_{12} - \beta_1) q^{17} + (\beta_{15} - \beta_{14} - \beta_{11}) q^{19} + ( - \beta_{8} - \beta_{5}) q^{21} + (\beta_{10} + \beta_{3}) q^{23} + ( - \beta_{13} - \beta_{12} - 1) q^{25} + ( - \beta_{15} + \beta_{14} - \beta_{2}) q^{27} + (\beta_{7} - \beta_{5} + \beta_{4}) q^{29} + (\beta_{9} - \beta_{6}) q^{31} + (\beta_{13} + \beta_1 + 1) q^{33} + ( - \beta_{14} + \beta_{11} + 3 \beta_{2}) q^{35} + ( - \beta_{8} + \beta_{7} + \beta_{5}) q^{37} + ( - \beta_{10} + \beta_{9} - \beta_{6}) q^{39} + \beta_1 q^{41} + ( - \beta_{15} - \beta_{14} - \beta_{11}) q^{43} + (\beta_{7} + 2 \beta_{4}) q^{45} + (\beta_{10} - \beta_{9} - \beta_{3}) q^{47} + (\beta_{13} + \beta_{12} - 1) q^{49} + ( - \beta_{14} + 3 \beta_{11} + 3 \beta_{2}) q^{51} + (2 \beta_{7} - 2 \beta_{5} - \beta_{4}) q^{53} + (\beta_{9} + 2 \beta_{6}) q^{55} + (2 \beta_{13} + \beta_{12} - \beta_1 - 1) q^{57} + ( - \beta_{14} + \beta_{11} - 2 \beta_{2}) q^{59} + ( - 3 \beta_{8} - \beta_{7} - \beta_{5}) q^{61} + ( - \beta_{10} - \beta_{9} + \cdots + \beta_{3}) q^{63}+ \cdots + (\beta_{15} + \beta_{14} + \cdots - 2 \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 8 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 8 q^{9} + 8 q^{33} - 32 q^{49} - 40 q^{57} - 32 q^{73} - 48 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 7x^{12} + 40x^{8} - 112x^{4} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{10} + 3\nu^{6} - 12\nu^{2} ) / 4 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{12} - 11\nu^{8} + 84\nu^{4} - 192 ) / 64 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 3\nu^{11} - 4\nu^{9} - 17\nu^{7} + 12\nu^{5} + 44\nu^{3} - 16\nu ) / 32 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -\nu^{15} - \nu^{13} + 5\nu^{11} + 3\nu^{9} - 18\nu^{7} + 4\nu^{5} + 8\nu^{3} - 32\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{15} + \nu^{13} + 5\nu^{11} + 13\nu^{9} - 18\nu^{7} - 52\nu^{5} + 8\nu^{3} + 352\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{15} - 15\nu^{11} - 16\nu^{9} + 64\nu^{7} + 48\nu^{5} - 208\nu^{3} - 64\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( \nu^{13} + 6\nu^{11} - 3\nu^{9} - 2\nu^{7} - 4\nu^{5} - 8\nu^{3} + 32\nu ) / 64 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -3\nu^{15} + 2\nu^{13} + 9\nu^{11} - 22\nu^{9} - 52\nu^{7} + 40\nu^{5} + 32\nu^{3} - 256\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -\nu^{15} + 6\nu^{13} + 3\nu^{11} - 34\nu^{9} + 4\nu^{7} + 152\nu^{5} + 32\nu^{3} - 256\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( -3\nu^{15} - 6\nu^{13} + 21\nu^{11} + 18\nu^{9} - 56\nu^{7} - 104\nu^{5} + 272\nu^{3} + 192\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( -5\nu^{14} - 6\nu^{12} + 23\nu^{10} + 2\nu^{8} - 68\nu^{6} - 56\nu^{4} + 64\nu^{2} - 128 ) / 256 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( -\nu^{14} - 4\nu^{12} + 3\nu^{10} + 28\nu^{8} - 28\nu^{6} - 96\nu^{4} + 192 ) / 64 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( \nu^{14} - 4\nu^{12} - 3\nu^{10} + 28\nu^{8} + 28\nu^{6} - 96\nu^{4} + 192 ) / 64 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( -5\nu^{14} + 6\nu^{12} + 23\nu^{10} - 2\nu^{8} - 68\nu^{6} + 56\nu^{4} + 64\nu^{2} + 128 ) / 256 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( -3\nu^{14} + 17\nu^{10} - 76\nu^{6} + 256\nu^{2} ) / 64 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{10} + \beta_{9} - 2\beta_{8} - \beta_{7} + 4\beta_{6} + 3\beta_{5} + 3\beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 3\beta_{15} - 2\beta_{14} + 2\beta_{13} - 2\beta_{12} - 2\beta_{11} + \beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 5\beta_{10} + 5\beta_{9} - 2\beta_{8} - 5\beta_{7} - 4\beta_{6} - \beta_{5} - 8\beta_{4} - \beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{14} + \beta_{13} + \beta_{12} - \beta_{11} + 5\beta_{2} + 8 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -3\beta_{10} + 13\beta_{9} - 18\beta_{8} - 9\beta_{7} + 4\beta_{6} + 3\beta_{5} + 24\beta_{4} + 7\beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( \beta_{15} + 10\beta_{14} + 14\beta_{13} - 14\beta_{12} + 10\beta_{11} + 3\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 19\beta_{10} + 19\beta_{9} - 14\beta_{8} + 13\beta_{7} + 4\beta_{6} - 7\beta_{5} - 8\beta_{4} - 23\beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 15\beta_{14} + 7\beta_{13} + 7\beta_{12} - 15\beta_{11} + 11\beta_{2} - 24 ) / 4 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( -29\beta_{10} + 19\beta_{9} - 46\beta_{8} - 23\beta_{7} - 68\beta_{6} - 3\beta_{5} + 72\beta_{4} - 39\beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -33\beta_{15} + 54\beta_{14} + 18\beta_{13} - 18\beta_{12} + 54\beta_{11} - 35\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 13\beta_{10} + 13\beta_{9} - 50\beta_{8} + 147\beta_{7} - 4\beta_{6} - 25\beta_{5} + 72\beta_{4} - 9\beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( 81\beta_{14} - 7\beta_{13} - 7\beta_{12} - 81\beta_{11} - 43\beta_{2} - 168 ) / 4 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( - 131 \beta_{10} + 77 \beta_{9} + 110 \beta_{8} + 55 \beta_{7} - 316 \beta_{6} + 35 \beta_{5} + \cdots - 185 \beta_{3} ) / 16 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( -127\beta_{15} - 118\beta_{14} - 82\beta_{13} + 82\beta_{12} - 118\beta_{11} - 189\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( - 237 \beta_{10} - 237 \beta_{9} - 270 \beta_{8} + 333 \beta_{7} - 124 \beta_{6} + \cdots + 361 \beta_{3} ) / 16 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1536\mathbb{Z}\right)^\times\).

\(n\) \(511\) \(517\) \(1025\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
767.1
1.32968 + 0.481610i
−1.32968 0.481610i
1.32968 0.481610i
−1.32968 + 0.481610i
−0.281691 1.38588i
0.281691 + 1.38588i
−0.281691 + 1.38588i
0.281691 1.38588i
−1.38588 + 0.281691i
1.38588 0.281691i
−1.38588 0.281691i
1.38588 + 0.281691i
−0.481610 + 1.32968i
0.481610 1.32968i
−0.481610 1.32968i
0.481610 + 1.32968i
0 −1.66757 0.468213i 0 −3.02045 0 3.62258i 0 2.56155 + 1.56155i 0
767.2 0 −1.66757 0.468213i 0 3.02045 0 3.62258i 0 2.56155 + 1.56155i 0
767.3 0 −1.66757 + 0.468213i 0 −3.02045 0 3.62258i 0 2.56155 1.56155i 0
767.4 0 −1.66757 + 0.468213i 0 3.02045 0 3.62258i 0 2.56155 1.56155i 0
767.5 0 −0.848071 1.51022i 0 −0.936426 0 2.20837i 0 −1.56155 + 2.56155i 0
767.6 0 −0.848071 1.51022i 0 0.936426 0 2.20837i 0 −1.56155 + 2.56155i 0
767.7 0 −0.848071 + 1.51022i 0 −0.936426 0 2.20837i 0 −1.56155 2.56155i 0
767.8 0 −0.848071 + 1.51022i 0 0.936426 0 2.20837i 0 −1.56155 2.56155i 0
767.9 0 0.848071 1.51022i 0 −0.936426 0 2.20837i 0 −1.56155 2.56155i 0
767.10 0 0.848071 1.51022i 0 0.936426 0 2.20837i 0 −1.56155 2.56155i 0
767.11 0 0.848071 + 1.51022i 0 −0.936426 0 2.20837i 0 −1.56155 + 2.56155i 0
767.12 0 0.848071 + 1.51022i 0 0.936426 0 2.20837i 0 −1.56155 + 2.56155i 0
767.13 0 1.66757 0.468213i 0 −3.02045 0 3.62258i 0 2.56155 1.56155i 0
767.14 0 1.66757 0.468213i 0 3.02045 0 3.62258i 0 2.56155 1.56155i 0
767.15 0 1.66757 + 0.468213i 0 −3.02045 0 3.62258i 0 2.56155 + 1.56155i 0
767.16 0 1.66757 + 0.468213i 0 3.02045 0 3.62258i 0 2.56155 + 1.56155i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 767.16
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
4.b odd 2 1 inner
8.b even 2 1 inner
8.d odd 2 1 inner
12.b even 2 1 inner
24.f even 2 1 inner
24.h odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1536.2.f.l 16
3.b odd 2 1 inner 1536.2.f.l 16
4.b odd 2 1 inner 1536.2.f.l 16
8.b even 2 1 inner 1536.2.f.l 16
8.d odd 2 1 inner 1536.2.f.l 16
12.b even 2 1 inner 1536.2.f.l 16
16.e even 4 2 1536.2.c.m 16
16.f odd 4 2 1536.2.c.m 16
24.f even 2 1 inner 1536.2.f.l 16
24.h odd 2 1 inner 1536.2.f.l 16
48.i odd 4 2 1536.2.c.m 16
48.k even 4 2 1536.2.c.m 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1536.2.c.m 16 16.e even 4 2
1536.2.c.m 16 16.f odd 4 2
1536.2.c.m 16 48.i odd 4 2
1536.2.c.m 16 48.k even 4 2
1536.2.f.l 16 1.a even 1 1 trivial
1536.2.f.l 16 3.b odd 2 1 inner
1536.2.f.l 16 4.b odd 2 1 inner
1536.2.f.l 16 8.b even 2 1 inner
1536.2.f.l 16 8.d odd 2 1 inner
1536.2.f.l 16 12.b even 2 1 inner
1536.2.f.l 16 24.f even 2 1 inner
1536.2.f.l 16 24.h odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1536, [\chi])\):

\( T_{5}^{4} - 10T_{5}^{2} + 8 \) Copy content Toggle raw display
\( T_{19}^{4} - 46T_{19}^{2} + 512 \) Copy content Toggle raw display
\( T_{23}^{4} - 72T_{23}^{2} + 1024 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( (T^{8} - 2 T^{6} + 2 T^{4} + \cdots + 81)^{2} \) Copy content Toggle raw display
$5$ \( (T^{4} - 10 T^{2} + 8)^{4} \) Copy content Toggle raw display
$7$ \( (T^{4} + 18 T^{2} + 64)^{4} \) Copy content Toggle raw display
$11$ \( (T^{4} + 14 T^{2} + 32)^{4} \) Copy content Toggle raw display
$13$ \( (T^{4} + 20 T^{2} + 32)^{4} \) Copy content Toggle raw display
$17$ \( (T^{4} + 52 T^{2} + 64)^{4} \) Copy content Toggle raw display
$19$ \( (T^{4} - 46 T^{2} + 512)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} - 72 T^{2} + 1024)^{4} \) Copy content Toggle raw display
$29$ \( (T^{4} - 74 T^{2} + 1352)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} + 26 T^{2} + 16)^{4} \) Copy content Toggle raw display
$37$ \( (T^{4} + 148 T^{2} + 5408)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} + 16)^{8} \) Copy content Toggle raw display
$43$ \( (T^{4} - 62 T^{2} + 128)^{4} \) Copy content Toggle raw display
$47$ \( (T^{2} - 32)^{8} \) Copy content Toggle raw display
$53$ \( (T^{4} - 218 T^{2} + 2888)^{4} \) Copy content Toggle raw display
$59$ \( (T^{4} + 74 T^{2} + 1352)^{4} \) Copy content Toggle raw display
$61$ \( (T^{4} + 244 T^{2} + 11552)^{4} \) Copy content Toggle raw display
$67$ \( (T^{4} - 158 T^{2} + 5408)^{4} \) Copy content Toggle raw display
$71$ \( (T^{4} - 104 T^{2} + 256)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} + 4 T - 64)^{8} \) Copy content Toggle raw display
$79$ \( (T^{4} + 138 T^{2} + 2704)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} + 190 T^{2} + 32)^{4} \) Copy content Toggle raw display
$89$ \( (T^{4} + 196 T^{2} + 4096)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} + 6 T - 8)^{8} \) Copy content Toggle raw display
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