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

Newform orbit 102.6.a.b

$q$ -expansion

$q - 4q^{2} + 9q^{3} + 16q^{4} + 9q^{5} - 36q^{6} - 88q^{7} - 64q^{8} + 81q^{9} - 36q^{10} - 315q^{11} + 144q^{12} - 421q^{13} + 352q^{14} + 81q^{15} + 256q^{16} + 289q^{17} - 324q^{18} + 89q^{19} + 144q^{20} - 792q^{21} + 1260q^{22} + 1389q^{23} - 576q^{24} + O(q^{25})$

Coefficient field

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

$x + 79$

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 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
$\operatorname{tr} a_p$	−4	9	9	−88	−315	−421	289	89	1389	−6318	−7870	−11272	9411	−10945	1902	−9678	438	23396	−10468	78324	31286	−29542	−13722	73620	−55432

$\operatorname{tr} a_n$ 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)[1]   # 102.6.a.b

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

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