Atlas › Modular forms › Weight 8 › Level 50 › 50.8.a › 50.8.a.a

Newform orbit 50.8.a.a

$q$ -expansion

$q - 8q^{2} - 43q^{3} + 64q^{4} + 344q^{6} - 974q^{7} - 512q^{8} - 338q^{9} + 87q^{11} - 2752q^{12} - 14828q^{13} + 7792q^{14} + 4096q^{16} + 35571q^{17} + 2704q^{18} + 20615q^{19} + 41882q^{21} - 696q^{22} - 22218q^{23} + 22016q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}$ . The eigenvalue of $T = T_{3} + T_{7}$ is a root of

$x + 1017$

Atkin–Lehner signs

$p$	$w_p$
2	$+1$
5	— ( $5^2 \mid 50$ )

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
$\operatorname{tr} a_p$	−8	−43	0	−974	87	−14828	35571	20615	−22218	−5760	302942	199366	−668523	143212	338316	1094322	−2135520	−1939318	3348751	3005652	3048397	5485130	−5205933	−832665	−5314754

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

Sato–Tate

The normalized $a_p / 2p^{7/2}$ for the primes $p < 1000$ not dividing 50, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.315 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, 10, 25, 50]: [1, 3, 5, 13, 19, 55] (certified at ell = 2147482921)
T = [(3, 1), (7, 1)]; h of degree 12 = 1 x 12 (phi(ord eps) x dim S_k^new); 5 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(50, 8)[0]   # 50.8.a.a

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

cargo run --release -p sagebrush-web --example atlas -- 50:8 1000