Atlas › Modular forms › Weight 4 › Level 10 › 10.4.a › 10.4.a.a

Newform orbit 10.4.a.a

$q$ -expansion

$q + 2q^{2} - 8q^{3} + 4q^{4} + 5q^{5} - 16q^{6} - 4q^{7} + 8q^{8} + 37q^{9} + 10q^{10} + 12q^{11} - 32q^{12} - 58q^{13} - 8q^{14} - 40q^{15} + 16q^{16} + 66q^{17} + 74q^{18} - 100q^{19} + 20q^{20} + 32q^{21} + 24q^{22} + 132q^{23} - 64q^{24} + O(q^{25})$

Coefficient field

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

$x + 12$

Atkin–Lehner signs

$p$	$w_p$
2	$-1$
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	−8	5	−4	12	−58	66	−100	132	−90	152	−34	−438	32	−204	222	420	902	−1024	432	362	−160	72	810	1106

$\operatorname{tr} a_n$ 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 10, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.118 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]: [1, 2, 3, 7] (certified at ell = 2147483629)
T = [(3, 1), (7, 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(10, 4)[0]   # 10.4.a.a

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

cargo run --release -p sagebrush-web --example atlas -- 10:4 1000