Atlas › Modular forms › Weight 6 › Level 5 › 5.6.a › 5.6.a.a

Newform orbit 5.6.a.a

$q$ -expansion

$q + 2q^{2} - 4q^{3} - 28q^{4} + 25q^{5} - 8q^{6} + 192q^{7} - 120q^{8} - 227q^{9} + 50q^{10} - 148q^{11} + 112q^{12} + 286q^{13} + 384q^{14} - 100q^{15} + 656q^{16} - 1678q^{17} - 454q^{18} + 1060q^{19} - 700q^{20} - 768q^{21} - 296q^{22} + 2976q^{23} + 480q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}$ . The eigenvalue of $T = T_{2} + T_{3}$ is a root of

$x + 2$

Atkin–Lehner signs

$p$	$w_p$
5	$-1$

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
$\operatorname{tr} a_p$	2	−4	25	192	−148	286	−1678	1060	2976	−3410	−2448	182	−9398	−1244	−12088	23846	−20020	32302	60972	−32648	−38774	−33360	16716	101370	−119038

$\operatorname{tr} a_n$ 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 5, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.097 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, 5]: [1, 3] (certified at ell = 2147483629)
T = [(2, 1), (3, 1)]; h of degree 1 = 1 x 1 (phi(ord eps) x dim S_k^new); 1 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(5, 6)[0]   # 5.6.a.a

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

cargo run --release -p sagebrush-web --example atlas -- 5:6 1000