Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [20,11,Mod(19,20)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(20, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1, 1]))
N = Newforms(chi, 11, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("20.19");
S:= CuspForms(chi, 11);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 20 = 2^{2} \cdot 5 \) |
Weight: | \( k \) | \(=\) | \( 11 \) |
Character orbit: | \([\chi]\) | \(=\) | 20.d (of order \(2\), degree \(1\), 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: | \(12.7071450535\) |
Analytic rank: | \(0\) |
Dimension: | \(24\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-expansion
The dimension is sufficiently large that we do not compute an algebraic \(q\)-expansion, but we have computed the trace expansion.
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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
19.1 | −31.7400 | − | 4.07116i | 190.073 | 990.851 | + | 258.437i | 101.732 | + | 3123.34i | −6032.92 | − | 773.819i | 14056.7 | −30397.4 | − | 12236.7i | −22921.2 | 9486.66 | − | 99549.0i | ||||||
19.2 | −31.7400 | + | 4.07116i | 190.073 | 990.851 | − | 258.437i | 101.732 | − | 3123.34i | −6032.92 | + | 773.819i | 14056.7 | −30397.4 | + | 12236.7i | −22921.2 | 9486.66 | + | 99549.0i | ||||||
19.3 | −28.1904 | − | 15.1426i | −349.582 | 565.401 | + | 853.755i | 1690.09 | − | 2628.54i | 9854.87 | + | 5293.59i | 15402.9 | −3010.79 | − | 32629.4i | 63158.6 | −87447.4 | + | 48507.3i | ||||||
19.4 | −28.1904 | + | 15.1426i | −349.582 | 565.401 | − | 853.755i | 1690.09 | + | 2628.54i | 9854.87 | − | 5293.59i | 15402.9 | −3010.79 | + | 32629.4i | 63158.6 | −87447.4 | − | 48507.3i | ||||||
19.5 | −23.9223 | − | 21.2538i | 94.4407 | 120.549 | + | 1016.88i | 3107.65 | + | 328.861i | −2259.24 | − | 2007.23i | −20081.9 | 18728.8 | − | 26888.2i | −50129.9 | −67352.4 | − | 73916.5i | ||||||
19.6 | −23.9223 | + | 21.2538i | 94.4407 | 120.549 | − | 1016.88i | 3107.65 | − | 328.861i | −2259.24 | + | 2007.23i | −20081.9 | 18728.8 | + | 26888.2i | −50129.9 | −67352.4 | + | 73916.5i | ||||||
19.7 | −21.8278 | − | 23.3997i | 416.738 | −71.0958 | + | 1021.53i | −2532.23 | − | 1831.23i | −9096.47 | − | 9751.56i | −9550.48 | 25455.4 | − | 20634.1i | 114622. | 12422.7 | + | 99225.4i | ||||||
19.8 | −21.8278 | + | 23.3997i | 416.738 | −71.0958 | − | 1021.53i | −2532.23 | + | 1831.23i | −9096.47 | + | 9751.56i | −9550.48 | 25455.4 | + | 20634.1i | 114622. | 12422.7 | − | 99225.4i | ||||||
19.9 | −17.2353 | − | 26.9619i | −146.443 | −429.889 | + | 929.393i | −2538.13 | + | 1823.05i | 2523.99 | + | 3948.38i | 13979.7 | 32467.5 | − | 4427.76i | −37603.5 | 92898.4 | + | 37012.0i | ||||||
19.10 | −17.2353 | + | 26.9619i | −146.443 | −429.889 | − | 929.393i | −2538.13 | − | 1823.05i | 2523.99 | − | 3948.38i | 13979.7 | 32467.5 | + | 4427.76i | −37603.5 | 92898.4 | − | 37012.0i | ||||||
19.11 | −0.302723 | − | 31.9986i | −375.794 | −1023.82 | + | 19.3734i | 2240.90 | + | 2178.07i | 113.762 | + | 12024.9i | −19635.7 | 929.854 | + | 32754.8i | 82172.5 | 69016.9 | − | 72364.8i | ||||||
19.12 | −0.302723 | + | 31.9986i | −375.794 | −1023.82 | − | 19.3734i | 2240.90 | − | 2178.07i | 113.762 | − | 12024.9i | −19635.7 | 929.854 | − | 32754.8i | 82172.5 | 69016.9 | + | 72364.8i | ||||||
19.13 | 0.302723 | − | 31.9986i | 375.794 | −1023.82 | − | 19.3734i | 2240.90 | + | 2178.07i | 113.762 | − | 12024.9i | 19635.7 | −929.854 | + | 32754.8i | 82172.5 | 70373.6 | − | 71046.1i | ||||||
19.14 | 0.302723 | + | 31.9986i | 375.794 | −1023.82 | + | 19.3734i | 2240.90 | − | 2178.07i | 113.762 | + | 12024.9i | 19635.7 | −929.854 | − | 32754.8i | 82172.5 | 70373.6 | + | 71046.1i | ||||||
19.15 | 17.2353 | − | 26.9619i | 146.443 | −429.889 | − | 929.393i | −2538.13 | + | 1823.05i | 2523.99 | − | 3948.38i | −13979.7 | −32467.5 | − | 4427.76i | −37603.5 | 5407.52 | + | 99853.7i | ||||||
19.16 | 17.2353 | + | 26.9619i | 146.443 | −429.889 | + | 929.393i | −2538.13 | − | 1823.05i | 2523.99 | + | 3948.38i | −13979.7 | −32467.5 | + | 4427.76i | −37603.5 | 5407.52 | − | 99853.7i | ||||||
19.17 | 21.8278 | − | 23.3997i | −416.738 | −71.0958 | − | 1021.53i | −2532.23 | − | 1831.23i | −9096.47 | + | 9751.56i | 9550.48 | −25455.4 | − | 20634.1i | 114622. | −98123.4 | + | 19281.8i | ||||||
19.18 | 21.8278 | + | 23.3997i | −416.738 | −71.0958 | + | 1021.53i | −2532.23 | + | 1831.23i | −9096.47 | − | 9751.56i | 9550.48 | −25455.4 | + | 20634.1i | 114622. | −98123.4 | − | 19281.8i | ||||||
19.19 | 23.9223 | − | 21.2538i | −94.4407 | 120.549 | − | 1016.88i | 3107.65 | + | 328.861i | −2259.24 | + | 2007.23i | 20081.9 | −18728.8 | − | 26888.2i | −50129.9 | 81331.5 | − | 58182.3i | ||||||
19.20 | 23.9223 | + | 21.2538i | −94.4407 | 120.549 | + | 1016.88i | 3107.65 | − | 328.861i | −2259.24 | − | 2007.23i | 20081.9 | −18728.8 | + | 26888.2i | −50129.9 | 81331.5 | + | 58182.3i | ||||||
See all 24 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
4.b | odd | 2 | 1 | inner |
5.b | even | 2 | 1 | inner |
20.d | odd | 2 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 20.11.d.d | ✓ | 24 |
4.b | odd | 2 | 1 | inner | 20.11.d.d | ✓ | 24 |
5.b | even | 2 | 1 | inner | 20.11.d.d | ✓ | 24 |
5.c | odd | 4 | 2 | 100.11.b.h | 24 | ||
20.d | odd | 2 | 1 | inner | 20.11.d.d | ✓ | 24 |
20.e | even | 4 | 2 | 100.11.b.h | 24 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
20.11.d.d | ✓ | 24 | 1.a | even | 1 | 1 | trivial |
20.11.d.d | ✓ | 24 | 4.b | odd | 2 | 1 | inner |
20.11.d.d | ✓ | 24 | 5.b | even | 2 | 1 | inner |
20.11.d.d | ✓ | 24 | 20.d | odd | 2 | 1 | inner |
100.11.b.h | 24 | 5.c | odd | 4 | 2 | ||
100.11.b.h | 24 | 20.e | even | 4 | 2 |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{12} - 503592 T_{3}^{10} + 93360281616 T_{3}^{8} + \cdots + 20\!\cdots\!00 \) acting on \(S_{11}^{\mathrm{new}}(20, [\chi])\).