Atlas › Modular forms › Weight 2 › Level 772 › 772.2.a › 772.2.a.c

Newform orbit 772.2.a.c

Trace form

The 9 newforms in this orbit are conjugate over $\mathbb{Q}$ ; the sum of their $q$ -expansions is

$9q + 5q^{3} + 12q^{5} + q^{7} + 14q^{9} + 7q^{11} + 8q^{13} + 3q^{15} + 17q^{17} + 4q^{19} + 2q^{21} - q^{23} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate a number field of degree 9. It is generated by the eigenvalue $\alpha$ of $T = T_{3} + 3T_{5}$ , whose minimal polynomial is

$x^{9} - 41x^{8} + 505x^{7} + 380x^{6} - 52533x^{5} + 334213x^{4} + 15516x^{3} - 5070568x^{2} + 5005696x + 23946128$

Atkin–Lehner signs

$p$	$w_p$
2	— ( $2^2 \mid 772$ )
193	$+1$

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	5	12	1	7	8	17	4	−1	10	1	15	15	16	−8	14	12	2	−11	−1	7	−13	12	12	19

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.238 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 label, dimension and $\operatorname{tr} a_p$ for every $p < 1000$ equal LMFDB's.

The engine's checks

dim M^+ at levels [1, 2, 4, 193, 386, 772]: [0, 1, 2, 16, 50, 100] (certified at ell = 2147483137)
T = [(3, 1), (5, 3)]; h of degree 16 = 1 x 16 (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(772, 2)[2]   # 772.2.a.c

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

cargo run --release -p sagebrush-web --example atlas -- 772:2 1000