Atlas › Modular forms › Weight 10 › Level 40 › 40.10.a › 40.10.a.d

Newform orbit 40.10.a.d

Trace form

The 3 newforms in this orbit are conjugate over $\mathbb{Q}$ ; the sum of their $q$ -expansions is

$3q + 84q^{3} + 1875q^{5} - 5520q^{7} + 47079q^{9} + 5556q^{11} - 83094q^{13} + 52500q^{15} + 367062q^{17} + 1489116q^{19} + 1573728q^{21} - 499920q^{23} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate a number field of degree 3. It is generated by the eigenvalue $\alpha$ of $T = T_{3} + T_{7}$ , whose minimal polynomial is

$x^{3} + 5436x^{2} - 60929616x - 102242806976$

Atkin–Lehner signs

$p$	$w_p$
2	— ( $2^2 \mid 40$ )
5	$-1$

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
$\operatorname{tr} a_p$	0	84	1875	−5520	5556	−83094	367062	1489116	−499920	5234682	12708912	21724434	27440478	−23218260	−28701528	−45629982	−268721868	155970138	−526916604	−239894424	198362430	−413839728	371949828	754926606	−903451002

$\operatorname{tr} a_n$ for every $n \le 1000$ is in the JSON.

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.356 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, 4, 5, 8, 10, 20, 40]: [1, 3, 6, 5, 11, 15, 30, 58] (certified at ell = 2147483629)
T = [(3, 1), (7, 1)]; h of degree 9 = 1 x 9 (phi(ord eps) x dim S_k^new); 5 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(40, 10)[3]   # 40.10.a.d

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

cargo run --release -p sagebrush-web --example atlas -- 40:10 1000