Atlas › Modular forms › Weight 2 › Level 963 › 963.2.a › 963.2.a.b

Newform orbit 963.2.a.b

Trace form

The 2 newforms in this orbit are conjugate over $\mathbb{Q}$ ; the sum of their $q$ -expansions is

$2q + q^{2} - q^{4} + 3q^{5} - 4q^{7} - q^{10} - 4q^{11} - 12q^{13} - 7q^{14} - 3q^{16} + 3q^{17} + 2q^{19} - 4q^{20} + 3q^{22} - 6q^{23} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}(\sqrt{5})$ . It is generated by the eigenvalue $\alpha$ of $T = T_{2} + 3T_{5}$ , whose minimal polynomial is

$x^{2} - 10x + 20$

Atkin–Lehner signs

$p$	$w_p$
3	— ( $3^2 \mid 963$ )
107	$-1$

For $p \parallel N$ every form in the orbit has $a_p = -p^{k/2-1} w_p$ .

Traces of Hecke eigenvalues

$p$	2	3	5	7	11	13	17	19	23	29	31	37	41	43	47	53	59	61	67	71	73	79	83	89	97
$\operatorname{tr} a_p$	1	0	3	−4	−4	−12	3	2	−6	2	−2	−13	−10	9	14	6	−3	−13	−10	3	−8	1	−3	−20	−12

$\operatorname{tr} a_n$ for every $n \le 1000$ is in the JSON.

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.393 s (one thread) and proven: the dimensions are certified, and the characteristic polynomial of $T$ over $\mathbb{Z}$ is reconstructed by CRT past a rigorous coefficient bound. The label, dimension and $\operatorname{tr} a_p$ for every $p < 1000$ equal LMFDB's.

The engine's checks

dim M^+ at levels [1, 3, 9, 107, 321, 963]: [0, 1, 2, 10, 38, 110] (certified at ell = 2147482621)
T = [(2, 1), (5, 3)]; h of degree 44 = 1 x 44 (phi(ord eps) x dim S_k^new); 7 primes, 0 rejected

Open in the notebook · JSON · stored data

Recompute it yourself

In Sage mode at sagebrush.space (or npx sagebrush --sage):

newform_orbits(963, 2)[1]   # 963.2.a.b

With the Rust engine (source), in engine/:

cargo run --release -p sagebrush-web --example atlas -- 963:2 1000