Atlas › Modular forms › Weight 2 › Level 970 › 970.2.a › 970.2.a.j

Newform orbit 970.2.a.j

Trace form

The 5 newforms in this orbit are conjugate over $\mathbb{Q}$ ; the sum of their $q$ -expansions is

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

Coefficient field

The coefficients $a_n$ generate a number field of degree 5. It is generated by the eigenvalue $\alpha$ of $T = T_{3} + T_{7}$ , whose minimal polynomial is

$x^{5} - 12x^{4} + 45x^{3} - 58x^{2} + 27x - 4$

Atkin–Lehner signs

$p$	$w_p$
2	$-1$
5	$-1$
97	$-1$

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 even 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
$\operatorname{tr} a_p$	5	4	5	8	2	0	−2	−2	−2	4	−6	−6	6	−4	14	20	2	−6	−12	−12	4	−8	6	24	5

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.347 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, 5, 10, 97, 194, 485, 970]: [0, 1, 1, 3, 8, 26, 50, 150] (certified at ell = 2147483137)
T = [(3, 1), (7, 1)]; h of degree 31 = 1 x 31 (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(970, 2)[9]   # 970.2.a.j

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

cargo run --release -p sagebrush-web --example atlas -- 970:2 1000