Atlas › Modular forms › Weight 4 › Level 141 › 141.4.a › 141.4.a.c

Newform orbit 141.4.a.c

Trace form

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

$5q - q^{2} + 15q^{3} + 15q^{4} + 10q^{5} - 3q^{6} + 10q^{7} + 63q^{8} + 45q^{9} + 24q^{10} + 8q^{11} + 45q^{12} - 52q^{13} + 56q^{14} + 30q^{15} + 99q^{16} + 298q^{17} - 9q^{18} + 130q^{19} - 48q^{20} + 30q^{21} - 518q^{22} + 274q^{23} + 189q^{24} + O(q^{25})$

Coefficient field

The coefficients $a_n$ generate a number field of degree 5. It is generated by the eigenvalue $\alpha$ of $T = T_{2} + T_{5}$ , whose minimal polynomial is

$x^{5} - 9x^{4} - 434x^{3} + 4342x^{2} + 1341x - 48353$

Atkin–Lehner signs

$p$	$w_p$
3	$-1$
47	$-1$

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
$\operatorname{tr} a_p$	−1	15	10	10	8	−52	298	130	274	114	364	108	−50	−722	235	1054	−268	−274	110	−568	−138	−2454	2636	−274	472

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

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.117 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, 3, 47, 141]: [1, 2, 13, 50] (certified at ell = 2147483137)
T = [(2, 1), (5, 1)]; h of degree 24 = 1 x 24 (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(141, 4)[2]   # 141.4.a.c

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

cargo run --release -p sagebrush-web --example atlas -- 141:4 1000