Atlas › Modular forms › Weight 6 › Level 70 › 70.6.a › 70.6.a.b

Newform orbit 70.6.a.b

$q$ -expansion

$q - 4q^{2} - 9q^{3} + 16q^{4} + 25q^{5} + 36q^{6} - 49q^{7} - 64q^{8} - 162q^{9} - 100q^{10} - 187q^{11} - 144q^{12} + 627q^{13} + 196q^{14} - 225q^{15} + 256q^{16} + 1813q^{17} + 648q^{18} + 258q^{19} + 400q^{20} + 441q^{21} + 748q^{22} + 2970q^{23} + 576q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}$ . The eigenvalue of $T = T_{3} + T_{11}$ is a root of

$x + 196$

Atkin–Lehner signs

$p$	$w_p$
2	$+1$
5	$-1$
7	$+1$

For $p \parallel N$ every form in the orbit has $a_p = -p^{k/2-1} w_p$ . The Fricke sign is $w_N = -1$ , so the sign of the functional equation is $(-1)^{k/2} w_N = +1$ : each L-function in the orbit has even analytic rank.

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
$\operatorname{tr} a_p$	−4	−9	25	−49	−187	627	1813	258	2970	1299	1916	6578	6676	3178	−22001	26168	3932	−48740	−44832	63736	60470	−43721	97276	45560	−57295

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

Sato–Tate

The normalized $a_p / 2p^{5/2}$ for the primes $p < 1000$ not dividing 70, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.287 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 engine's checks

dim M^+ at levels [1, 2, 5, 7, 10, 14, 35, 70]: [1, 2, 3, 5, 9, 12, 22, 64] (certified at ell = 2147483629)
T = [(3, 1), (11, 1)]; h of degree 10 = 1 x 10 (phi(ord eps) x dim S_k^new); 4 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(70, 6)[1]   # 70.6.a.b

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

cargo run --release -p sagebrush-web --example atlas -- 70:6 1000