Atlas › Modular forms › Weight 4 › Level 25 › 25.4.a › 25.4.a.b

Newform orbit 25.4.a.b

$q$ -expansion

$q + q^{2} + 7q^{3} - 7q^{4} + 7q^{6} + 6q^{7} - 15q^{8} + 22q^{9} - 43q^{11} - 49q^{12} - 28q^{13} + 6q^{14} + 41q^{16} + 91q^{17} + 22q^{18} - 35q^{19} + 42q^{21} - 43q^{22} + 162q^{23} - 105q^{24} + O(q^{25})$

Coefficient field

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

$x - 8$

Atkin–Lehner signs

$p$	$w_p$
5	— ( $5^2 \mid 25$ )

For $p \parallel N$ every form in the orbit has $a_p = -p^{k/2-1} w_p$ .

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
$\operatorname{tr} a_p$	1	7	0	6	−43	−28	91	−35	162	160	42	−314	−203	92	196	82	−280	−518	141	412	−763	510	777	−945	1246

$\operatorname{tr} a_n$ 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 25, 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, 25]: [1, 3, 9] (certified at ell = 2147482921)
T = [(2, 1), (3, 1)]; h of degree 3 = 1 x 3 (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(25, 4)[1]   # 25.4.a.b

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

cargo run --release -p sagebrush-web --example atlas -- 25:4 1000