Properties

Label 75.18.a.i
Level $75$
Weight $18$
Character orbit 75.a
Self dual yes
Analytic conductor $137.417$
Analytic rank $0$
Dimension $6$
CM no
Inner twists $1$

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Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [75,18,Mod(1,75)] 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("75.1"); S:= CuspForms(chi, 18); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(75, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0])) N = Newforms(chi, 18, names="a")
 
Level: \( N \) \(=\) \( 75 = 3 \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 18 \)
Character orbit: \([\chi]\) \(=\) 75.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [6,-338] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(2)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(137.416565508\)
Analytic rank: \(0\)
Dimension: \(6\)
Coefficient field: \(\mathbb{Q}[x]/(x^{6} - \cdots)\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - 2x^{5} - 580318x^{4} + 45393344x^{3} + 72695152416x^{2} - 6623241804288x - 149217035286528 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{10}\cdot 3^{5}\cdot 5^{7} \)
Twist minimal: yes
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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 a basis \(1,\beta_1,\ldots,\beta_{5}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_1 - 56) q^{2} + 6561 q^{3} + (\beta_{2} - 3 \beta_1 + 65542) q^{4} + ( - 6561 \beta_1 - 367416) q^{6} + (\beta_{3} - 9 \beta_{2} + \cdots + 3501733) q^{7} + ( - \beta_{4} + 17 \beta_{2} + \cdots + 4226294) q^{8}+ \cdots + (215233605 \beta_{5} + \cdots + 620566609449078) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q - 338 q^{2} + 39366 q^{3} + 393248 q^{4} - 2217618 q^{6} + 20999794 q^{7} + 25242756 q^{8} + 258280326 q^{9} + 85907324 q^{11} + 2580100128 q^{12} + 344649098 q^{13} + 4962466602 q^{14} + 13788291320 q^{16}+ \cdots + 36\!\cdots\!04 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{6} - 2x^{5} - 580318x^{4} + 45393344x^{3} + 72695152416x^{2} - 6623241804288x - 149217035286528 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} + 115\nu - 193478 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{5} - 822\nu^{4} + 227886\nu^{3} + 241652944\nu^{2} + 8908591328\nu - 5311831526144 ) / 549824 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( \nu^{3} + 185\nu^{2} - 308302\nu - 13567280 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -17\nu^{5} - 1478\nu^{4} + 9447278\nu^{3} - 55442192\nu^{2} - 1127935764192\nu + 42361145436544 ) / 549824 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} - 115\beta _1 + 193478 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{4} - 185\beta_{2} + 329577\beta _1 - 22226150 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( 44\beta_{5} - 446\beta_{4} - 748\beta_{3} + 415700\beta_{2} - 82924884\beta _1 + 63761417968 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( -36168\beta_{5} + 594498\beta_{4} + 65032\beta_{3} - 142211366\beta_{2} + 124388741638\beta _1 - 16034217215508 \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
541.028
464.046
112.575
−18.7333
−410.696
−686.218
−597.028 6561.00 225370. 0 −3.91710e6 −1.98246e7 −5.62985e7 4.30467e7 0
1.2 −520.046 6561.00 139375. 0 −3.41202e6 2.58253e7 −4.31818e6 4.30467e7 0
1.3 −168.575 6561.00 −102655. 0 −1.10602e6 2.46799e6 3.94004e7 4.30467e7 0
1.4 −37.2667 6561.00 −129683. 0 −244507. −4.45476e6 9.71748e6 4.30467e7 0
1.5 354.696 6561.00 −5262.54 0 2.32716e6 1.41469e7 −4.83574e7 4.30467e7 0
1.6 630.218 6561.00 266103. 0 4.13486e6 2.83896e6 8.50989e7 4.30467e7 0
\(n\): e.g. 2-40 or 80-90
Embeddings: e.g. 1-3 or 1.6
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(3\) \( -1 \)
\(5\) \( +1 \)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 75.18.a.i 6
5.b even 2 1 75.18.a.j yes 6
5.c odd 4 2 75.18.b.h 12
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
75.18.a.i 6 1.a even 1 1 trivial
75.18.a.j yes 6 5.b even 2 1
75.18.b.h 12 5.c odd 4 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{6} + 338 T_{2}^{5} - 532718 T_{2}^{4} - 171809536 T_{2}^{3} + 54300836896 T_{2}^{2} + \cdots + 436009513623552 \) acting on \(S_{18}^{\mathrm{new}}(\Gamma_0(75))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{6} + \cdots + 436009513623552 \) Copy content Toggle raw display
$3$ \( (T - 6561)^{6} \) Copy content Toggle raw display
$5$ \( T^{6} \) Copy content Toggle raw display
$7$ \( T^{6} + \cdots + 22\!\cdots\!25 \) Copy content Toggle raw display
$11$ \( T^{6} + \cdots - 24\!\cdots\!52 \) Copy content Toggle raw display
$13$ \( T^{6} + \cdots - 46\!\cdots\!63 \) Copy content Toggle raw display
$17$ \( T^{6} + \cdots - 15\!\cdots\!16 \) Copy content Toggle raw display
$19$ \( T^{6} + \cdots - 76\!\cdots\!75 \) Copy content Toggle raw display
$23$ \( T^{6} + \cdots + 91\!\cdots\!00 \) Copy content Toggle raw display
$29$ \( T^{6} + \cdots + 13\!\cdots\!00 \) Copy content Toggle raw display
$31$ \( T^{6} + \cdots + 46\!\cdots\!25 \) Copy content Toggle raw display
$37$ \( T^{6} + \cdots + 11\!\cdots\!00 \) Copy content Toggle raw display
$41$ \( T^{6} + \cdots - 14\!\cdots\!00 \) Copy content Toggle raw display
$43$ \( T^{6} + \cdots - 33\!\cdots\!91 \) Copy content Toggle raw display
$47$ \( T^{6} + \cdots + 33\!\cdots\!56 \) Copy content Toggle raw display
$53$ \( T^{6} + \cdots - 37\!\cdots\!00 \) Copy content Toggle raw display
$59$ \( T^{6} + \cdots + 14\!\cdots\!00 \) Copy content Toggle raw display
$61$ \( T^{6} + \cdots + 29\!\cdots\!21 \) Copy content Toggle raw display
$67$ \( T^{6} + \cdots - 29\!\cdots\!91 \) Copy content Toggle raw display
$71$ \( T^{6} + \cdots + 92\!\cdots\!84 \) Copy content Toggle raw display
$73$ \( T^{6} + \cdots - 33\!\cdots\!00 \) Copy content Toggle raw display
$79$ \( T^{6} + \cdots - 23\!\cdots\!00 \) Copy content Toggle raw display
$83$ \( T^{6} + \cdots - 10\!\cdots\!32 \) Copy content Toggle raw display
$89$ \( T^{6} + \cdots + 66\!\cdots\!00 \) Copy content Toggle raw display
$97$ \( T^{6} + \cdots + 13\!\cdots\!69 \) Copy content Toggle raw display
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