Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [1224,1,Mod(883,1224)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(1224, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1, 1, 0, 1]))
N = Newforms(chi, 1, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("1224.883");
S:= CuspForms(chi, 1);
N := Newforms(S);
Level: | |||
Weight: | |||
Character orbit: | 1224.n (of order , degree , 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: | yes |
Analytic conductor: | |
Analytic rank: | |
Dimension: | |
Coefficient field: | |
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
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Defining polynomial: |
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Coefficient ring: | |
Coefficient ring index: | |
Twist minimal: | yes |
Projective image: | |
Projective field: | Galois closure of 4.0.9792.1 |
Artin image: | |
Artin field: | Galois closure of 8.0.14670139392.3 |
-expansion
comment: q-expansion
sage: f.q_expansion() # note that sage often uses an isomorphic number field
gp: mfcoefs(f, 20)
Coefficients of the -expansion are expressed in terms of . We also show the integral -expansion of the trace form.
Character values
We give the values of on generators for .
Embeddings
For each embedding of the coefficient field, the values 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 | ||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
883.1 |
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1.00000 | 0 | 1.00000 | −1.41421 | 0 | 1.41421 | 1.00000 | 0 | −1.41421 | ||||||||||||||||||||||||
883.2 | 1.00000 | 0 | 1.00000 | 1.41421 | 0 | −1.41421 | 1.00000 | 0 | 1.41421 | |||||||||||||||||||||||||
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
136.e | odd | 2 | 1 | CM by |
8.d | odd | 2 | 1 | inner |
17.b | even | 2 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 1224.1.n.c | yes | 2 |
3.b | odd | 2 | 1 | 1224.1.n.b | ✓ | 2 | |
8.d | odd | 2 | 1 | inner | 1224.1.n.c | yes | 2 |
17.b | even | 2 | 1 | inner | 1224.1.n.c | yes | 2 |
24.f | even | 2 | 1 | 1224.1.n.b | ✓ | 2 | |
51.c | odd | 2 | 1 | 1224.1.n.b | ✓ | 2 | |
136.e | odd | 2 | 1 | CM | 1224.1.n.c | yes | 2 |
408.h | even | 2 | 1 | 1224.1.n.b | ✓ | 2 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
1224.1.n.b | ✓ | 2 | 3.b | odd | 2 | 1 | |
1224.1.n.b | ✓ | 2 | 24.f | even | 2 | 1 | |
1224.1.n.b | ✓ | 2 | 51.c | odd | 2 | 1 | |
1224.1.n.b | ✓ | 2 | 408.h | even | 2 | 1 | |
1224.1.n.c | yes | 2 | 1.a | even | 1 | 1 | trivial |
1224.1.n.c | yes | 2 | 8.d | odd | 2 | 1 | inner |
1224.1.n.c | yes | 2 | 17.b | even | 2 | 1 | inner |
1224.1.n.c | yes | 2 | 136.e | odd | 2 | 1 | CM |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on :
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