Atlas › Modular forms › Weight 4 › Level 62 › 62.4.a › 62.4.a.c

Newform orbit 62.4.a.c

Trace form

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

$3q - 6q^{2} + 4q^{3} + 12q^{4} + q^{5} - 8q^{6} + 17q^{7} - 24q^{8} + 119q^{9} - 2q^{10} - 22q^{11} + 16q^{12} + 140q^{13} - 34q^{14} + 252q^{15} + 48q^{16} + 56q^{17} - 238q^{18} - 3q^{19} + 4q^{20} - 452q^{21} + 44q^{22} - 128q^{23} - 32q^{24} + O(q^{25})$

Coefficient field

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

$x^{3} - 5x^{2} - 516x + 1288$

Atkin–Lehner signs

$p$	$w_p$
2	$+1$
31	$+1$

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
$\operatorname{tr} a_p$	−6	4	1	17	−22	140	56	−3	−128	−118	−93	658	43	274	−564	272	255	228	−356	−1721	−162	666	−194	−1778	2477

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.101 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, 31, 62]: [1, 2, 9, 26] (certified at ell = 2147482951)
T = [(3, 1), (5, 1)]; h of degree 8 = 1 x 8 (phi(ord eps) x dim S_k^new); 2 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(62, 4)[2]   # 62.4.a.c

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

cargo run --release -p sagebrush-web --example atlas -- 62:4 1000