Atlas › Modular forms › Weight 2 › Level 975 › 975.2.a › 975.2.a.o

Newform orbit 975.2.a.o

Trace form

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

$3q + 3q^{3} + 8q^{4} - q^{7} - 6q^{8} + 3q^{9} + q^{11} + 8q^{12} - 3q^{13} - 6q^{14} + 26q^{16} + q^{17} + 6q^{19} - q^{21} + 6q^{22} + 7q^{23} - 6q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate a number field of degree 3. It is generated by the eigenvalue $\alpha$ of $T = T_{2} + 2T_{7} + 3T_{11} + 4T_{17} + 5T_{19} + 6T_{23} + 7T_{29} + 8T_{31}$ , whose minimal polynomial is

$x^{3} - 251x^{2} + 16299x - 69841$

Atkin–Lehner signs

$p$	$w_p$
3	$-1$
5	— ( $5^2 \mid 975$ )
13	$+1$

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
$\operatorname{tr} a_p$	0	3	0	−1	1	−3	1	6	7	18	6	−13	1	0	18	−11	−8	9	−4	−11	6	5	−8	11	25

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 1.111 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, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975]: [0, 1, 1, 1, 4, 3, 6, 8, 12, 32, 36, 144] (certified at ell = 2147482921)
T = [(2, 1), (7, 2), (11, 3), (17, 4), (19, 5), (23, 6), (29, 7), (31, 8)]; h of degree 38 = 1 x 38 (phi(ord eps) x dim S_k^new); 11 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(975, 2)[14]   # 975.2.a.o

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

cargo run --release -p sagebrush-web --example atlas -- 975:2 1000