Atlas › Modular forms › Weight 4 › Level 118 › 118.4.a › 118.4.a.b

Newform orbit 118.4.a.b

$q$ -expansion

$q + 2q^{2} - 7q^{3} + 4q^{4} + 5q^{5} - 14q^{6} - 15q^{7} + 8q^{8} + 22q^{9} + 10q^{10} - 50q^{11} - 28q^{12} - 66q^{13} - 30q^{14} - 35q^{15} + 16q^{16} + 14q^{17} + 44q^{18} - 11q^{19} + 20q^{20} + 105q^{21} - 100q^{22} - 172q^{23} - 56q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}$ . The eigenvalue of $T = T_{3} + T_{5}$ is a root of

$x + 2$

Atkin–Lehner signs

$p$	$w_p$
2	$-1$
59	$+1$

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 odd 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
$\operatorname{tr} a_p$	2	−7	5	−15	−50	−66	14	−11	−172	287	26	128	167	−78	38	−147	−59	76	514	−1140	−848	359	−362	1212	836

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

Sato–Tate

The normalized $a_p / 2p^{3/2}$ for the primes $p < 1000$ not dividing 118, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.113 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, 59, 118]: [1, 2, 16, 47] (certified at ell = 2147482481)
T = [(3, 1), (5, 1)]; h of degree 15 = 1 x 15 (phi(ord eps) x dim S_k^new); 3 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(118, 4)[1]   # 118.4.a.b

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

cargo run --release -p sagebrush-web --example atlas -- 118:4 1000