Atlas › Modular forms › Weight 2 › Level 275 › 275.2.a › 275.2.a.e

Newform orbit 275.2.a.e

Trace form

The 2 newforms in this orbit are conjugate over $\mathbb{Q}$ ; the sum of their $q$ -expansions is

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

Coefficient field

The coefficients $a_n$ generate $\mathbb{Q}(\sqrt{13})$ . It is generated by the eigenvalue $\alpha$ of $T = T_{2} + 3T_{3}$ , whose minimal polynomial is

$x^{2} + 4x - 9$

Atkin–Lehner signs

$p$	$w_p$
5	— ( $5^2 \mid 275$ )
11	$+1$

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
$\operatorname{tr} a_p$	−1	−1	0	−5	−2	−10	−3	−2	11	−9	6	−12	−4	0	6	−1	−14	−5	8	2	5	−11	−11	7	−27

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.19 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, 5, 11, 25, 55, 275]: [0, 1, 2, 3, 8, 32] (certified at ell = 2147482921)
T = [(2, 1), (3, 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(275, 2)[4]   # 275.2.a.e

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

cargo run --release -p sagebrush-web --example atlas -- 275:2 1000