Atlas › Modular forms › Weight 2 › Level 553 › 553.2.a › 553.2.a.a

Newform orbit 553.2.a.a

Trace form

The 7 newforms in this orbit are conjugate over $\mathbb{Q}$ ; the sum of their $q$ -expansions is

$7q - 6q^{2} - 3q^{3} + 8q^{4} - 4q^{5} - 2q^{6} + 7q^{7} - 15q^{8} - 2q^{9} + 2q^{10} - 13q^{11} - 2q^{12} - q^{13} - 6q^{14} - 9q^{15} + 14q^{16} - 12q^{17} + 7q^{18} - 4q^{19} + 2q^{20} - 3q^{21} + q^{22} - 27q^{23} + 12q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate a number field of degree 7. It is generated by the eigenvalue $\alpha$ of $T = T_{2} + T_{3}$ , whose minimal polynomial is

$x^{7} + 9x^{6} + 22x^{5} - 5x^{4} - 50x^{3} + 8x^{2} + 13x - 1$

Atkin–Lehner signs

$p$	$w_p$
7	$-1$
79	$-1$

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
$\operatorname{tr} a_p$	−6	−3	−4	7	−13	−1	−12	−4	−27	−16	3	−4	−14	−11	−34	−16	1	1	−14	−26	23	7	−6	4	3

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.203 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, 7, 79, 553]: [0, 1, 7, 54] (certified at ell = 2147483053)
T = [(2, 1), (3, 1)]; h of degree 39 = 1 x 39 (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(553, 2)[0]   # 553.2.a.a

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

cargo run --release -p sagebrush-web --example atlas -- 553:2 1000