Atlas › Modular forms › Weight 6 › Level 102 › 102.6.a › 102.6.a.a

Newform orbit 102.6.a.a

$q$ -expansion

$q - 4q^{2} - 9q^{3} + 16q^{4} + 81q^{5} + 36q^{6} + 92q^{7} - 64q^{8} + 81q^{9} - 324q^{10} - 225q^{11} - 144q^{12} - 169q^{13} - 368q^{14} - 729q^{15} + 256q^{16} + 289q^{17} - 324q^{18} + 431q^{19} + 1296q^{20} - 828q^{21} + 900q^{22} + 1875q^{23} + 576q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}$ . The eigenvalue of $T = T_{5} + T_{7}$ is a root of

$x - 173$

Atkin–Lehner signs

$p$	$w_p$
2	$+1$
3	$+1$
17	$-1$

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
$\operatorname{tr} a_p$	−4	−9	81	92	−225	−169	289	431	1875	6786	−994	3992	9015	−7183	11910	30894	41946	14000	−55828	−45156	64874	−27922	−38490	2016	28196

$\operatorname{tr} a_n$ 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 102, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.327 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, 3, 6, 17, 34, 51, 102]: [1, 2, 3, 7, 8, 24, 32, 94] (certified at ell = 2147483489)
T = [(5, 1), (7, 1)]; h of degree 12 = 1 x 12 (phi(ord eps) x dim S_k^new); 4 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(102, 6)[0]   # 102.6.a.a

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

cargo run --release -p sagebrush-web --example atlas -- 102:6 1000