Atlas › Modular forms › Weight 6 › Level 98 › 98.6.a › 98.6.a.b

Newform orbit 98.6.a.b

$q$ -expansion

$q + 4q^{2} - 8q^{3} + 16q^{4} - 10q^{5} - 32q^{6} + 64q^{8} - 179q^{9} - 40q^{10} - 340q^{11} - 128q^{12} + 294q^{13} + 80q^{15} + 256q^{16} - 1226q^{17} - 716q^{18} - 2432q^{19} - 160q^{20} - 1360q^{22} + 2000q^{23} - 512q^{24} + O(q^{25})$

Coefficient field

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

$x + 18$

Atkin–Lehner signs

$p$	$w_p$
2	$-1$
7	— ( $7^2 \mid 98$ )

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
$\operatorname{tr} a_p$	4	−8	−10	0	−340	294	−1226	−2432	2000	−6746	−8856	9182	14574	8108	312	−14634	27656	−34338	12316	36920	61718	−64752	77056	8166	−20650

$\operatorname{tr} a_n$ 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 98, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.293 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, 7, 14, 49, 98]: [1, 2, 5, 12, 25, 72] (certified at ell = 2147483647)
T = [(3, 1), (5, 1)]; h of degree 18 = 1 x 18 (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(98, 6)[1]   # 98.6.a.b

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

cargo run --release -p sagebrush-web --example atlas -- 98:6 1000