Properties

Label 75.18.a.d
Level $75$
Weight $18$
Character orbit 75.a
Self dual yes
Analytic conductor $137.417$
Analytic rank $1$
Dimension $3$
CM no
Inner twists $1$

Related objects

Downloads

Learn more

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 = [3,253] 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: \(1\)
Dimension: \(3\)
Coefficient field: \(\mathbb{Q}[x]/(x^{3} - \cdots)\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{3} - x^{2} - 182396x + 3921120 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 2^{2}\cdot 3\cdot 5 \)
Twist minimal: no (minimal twist has level 15)
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 \(1,\beta_1,\beta_2\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\beta_1 + 84) q^{2} - 6561 q^{3} + (\beta_{2} + 137 \beta_1 - 2408) q^{4} + ( - 6561 \beta_1 - 551124) q^{6} + ( - 186 \beta_{2} + 4048 \beta_1 + 1442812) q^{7} + (253 \beta_{2} - 66423 \beta_1 + 5418312) q^{8}+ \cdots + (288929591352 \beta_{2} + \cdots + 13\!\cdots\!72) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 3 q + 253 q^{2} - 19683 q^{3} - 7087 q^{4} - 1659933 q^{6} + 4332484 q^{7} + 16188513 q^{8} + 129140163 q^{9} + 943563680 q^{11} + 46497807 q^{12} - 4257013150 q^{13} + 1847483988 q^{14} - 21943871359 q^{16}+ \cdots + 40\!\cdots\!80 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{3} - x^{2} - 182396x + 3921120 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} + 31\nu - 121608 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} - 31\beta _1 + 121608 \) 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
−436.958
21.5502
416.408
−352.958 −6561.00 −6492.31 0 2.31576e6 −1.07009e7 4.85545e7 4.30467e7 0
1.2 105.550 −6561.00 −119931. 0 −692515. 2.39385e7 −2.64934e7 4.30467e7 0
1.3 500.408 −6561.00 119336. 0 −3.28318e6 −8.90512e6 −5.87255e6 4.30467e7 0
\(n\): e.g. 2-40 or 80-90
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.d 3
5.b even 2 1 15.18.a.c 3
5.c odd 4 2 75.18.b.e 6
15.d odd 2 1 45.18.a.d 3
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
15.18.a.c 3 5.b even 2 1
45.18.a.d 3 15.d odd 2 1
75.18.a.d 3 1.a even 1 1 trivial
75.18.b.e 6 5.c odd 4 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{3} - 253T_{2}^{2} - 161060T_{2} + 18642624 \) acting on \(S_{18}^{\mathrm{new}}(\Gamma_0(75))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{3} - 253 T^{2} + \cdots + 18642624 \) Copy content Toggle raw display
$3$ \( (T + 6561)^{3} \) Copy content Toggle raw display
$5$ \( T^{3} \) Copy content Toggle raw display
$7$ \( T^{3} + \cdots - 22\!\cdots\!60 \) Copy content Toggle raw display
$11$ \( T^{3} + \cdots + 22\!\cdots\!36 \) Copy content Toggle raw display
$13$ \( T^{3} + \cdots - 63\!\cdots\!28 \) Copy content Toggle raw display
$17$ \( T^{3} + \cdots + 12\!\cdots\!72 \) Copy content Toggle raw display
$19$ \( T^{3} + \cdots - 15\!\cdots\!00 \) Copy content Toggle raw display
$23$ \( T^{3} + \cdots - 10\!\cdots\!40 \) Copy content Toggle raw display
$29$ \( T^{3} + \cdots - 45\!\cdots\!00 \) Copy content Toggle raw display
$31$ \( T^{3} + \cdots + 58\!\cdots\!00 \) Copy content Toggle raw display
$37$ \( T^{3} + \cdots - 83\!\cdots\!60 \) Copy content Toggle raw display
$41$ \( T^{3} + \cdots - 60\!\cdots\!60 \) Copy content Toggle raw display
$43$ \( T^{3} + \cdots - 23\!\cdots\!64 \) Copy content Toggle raw display
$47$ \( T^{3} + \cdots + 42\!\cdots\!08 \) Copy content Toggle raw display
$53$ \( T^{3} + \cdots - 14\!\cdots\!80 \) Copy content Toggle raw display
$59$ \( T^{3} + \cdots + 76\!\cdots\!00 \) Copy content Toggle raw display
$61$ \( T^{3} + \cdots + 39\!\cdots\!68 \) Copy content Toggle raw display
$67$ \( T^{3} + \cdots - 79\!\cdots\!68 \) Copy content Toggle raw display
$71$ \( T^{3} + \cdots - 71\!\cdots\!08 \) Copy content Toggle raw display
$73$ \( T^{3} + \cdots - 74\!\cdots\!80 \) Copy content Toggle raw display
$79$ \( T^{3} + \cdots - 77\!\cdots\!00 \) Copy content Toggle raw display
$83$ \( T^{3} + \cdots - 65\!\cdots\!52 \) Copy content Toggle raw display
$89$ \( T^{3} + \cdots - 77\!\cdots\!00 \) Copy content Toggle raw display
$97$ \( T^{3} + \cdots + 41\!\cdots\!72 \) Copy content Toggle raw display
show more
show less