Atlas › Modular forms › Weight 2 › Level 607 › 607.2.a › 607.2.a.c

Newform orbit 607.2.a.c

Trace form

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

$7q - q^{2} - 2q^{3} + 7q^{4} - 13q^{5} - 9q^{6} - 4q^{7} - q^{9} + 8q^{10} - q^{11} - 3q^{12} + 6q^{13} - 4q^{14} + 3q^{15} - 5q^{16} - 19q^{17} + q^{18} + 4q^{19} - 24q^{20} - 37q^{22} - 11q^{23} - 12q^{24} + O(q^{25})$

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

$x^{7} + 3x^{6} - 7x^{5} - 10x^{4} + 7x^{3} + 7x^{2} - x - 1$

Atkin–Lehner signs

$p$	$w_p$
607	$+1$

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
$\operatorname{tr} a_p$	−1	−2	−13	−4	−1	6	−19	4	−11	−15	−13	−2	−31	9	19	−30	4	19	−30	−19	5	−6	−40	12	21

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.21 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, 607]: [0, 51] (certified at ell = 2147480989)
T = [(2, 1), (3, 1)]; h of degree 50 = 1 x 50 (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(607, 2)[2]   # 607.2.a.c

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

cargo run --release -p sagebrush-web --example atlas -- 607:2 1000