Atlas › Modular forms › Weight 4 › Level 174 › 174.4.a › 174.4.a.b

Newform orbit 174.4.a.b

$q$ -expansion

$q - 2q^{2} - 3q^{3} + 4q^{4} - 8q^{5} + 6q^{6} + 19q^{7} - 8q^{8} + 9q^{9} + 16q^{10} - 9q^{11} - 12q^{12} + 17q^{13} - 38q^{14} + 24q^{15} + 16q^{16} - 7q^{17} - 18q^{18} - 36q^{19} - 32q^{20} - 57q^{21} + 18q^{22} - 182q^{23} + 24q^{24} + O(q^{25})$

Coefficient field

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

$x - 11$

Atkin–Lehner signs

$p$	$w_p$
2	$+1$
3	$+1$
29	$-1$

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
$\operatorname{tr} a_p$	−2	−3	−8	19	−9	17	−7	−36	−182	29	−102	−166	−406	−80	−173	−68	222	106	681	−286	358	516	922	−1129	−1016

$\operatorname{tr} a_n$ 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 174, against the semicircle $\tfrac{2}{\pi}\sqrt{1 - x^2}$ :

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.158 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, 29, 58, 87, 174]: [1, 2, 2, 5, 9, 25, 32, 94] (certified at ell = 2147483549)
T = [(5, 1), (7, 1)]; h of degree 14 = 1 x 14 (phi(ord eps) x dim S_k^new); 3 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(174, 4)[1]   # 174.4.a.b

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

cargo run --release -p sagebrush-web --example atlas -- 174:4 1000