Atlas › Modular forms › Weight 2 › Level 410 › 410.2.a

Newspace 410.2.a: $S_{2}^{\mathrm{new}}(\Gamma_0(410))$

Newforms

Label	Dim	Coefficient field	Trace form	AL signs	Sign	Elliptic curve
410.2.a.a	1	$\mathbb{Q}$	$q - q^{2} - 2q^{3} + q^{4} + q^{5} + 2q^{6} + 2q^{7} + O(q^{8})$	+ − +	$+1$	410c1 rank 0
410.2.a.b	1	$\mathbb{Q}$	$q - q^{2} + q^{4} + q^{5} - 2q^{7} + O(q^{8})$	+ − −	$-1$	410a1 rank 1
410.2.a.c	1	$\mathbb{Q}$	$q + q^{2} - 2q^{3} + q^{4} - q^{5} - 2q^{6} - 2q^{7} + O(q^{8})$	− + −	$-1$	410d1 rank 1
410.2.a.d	1	$\mathbb{Q}$	$q + q^{2} + q^{4} + q^{5} + 4q^{7} + O(q^{8})$	− − −	$+1$	410b1 rank 0
410.2.a.e	2	$\mathbb{Q}(\sqrt{5})$	$2q - 2q^{2} - 2q^{3} + 2q^{4} - 2q^{5} + 2q^{6} - 2q^{7} + O(q^{8})$	+ + +	$-1$
410.2.a.f	2	$\mathbb{Q}(\sqrt{3})$	$2q - 2q^{2} + 2q^{3} + 2q^{4} - 2q^{5} - 2q^{6} + 4q^{7} + O(q^{8})$	+ + −	$+1$
410.2.a.g	2	$\mathbb{Q}(\sqrt{17})$	$2q - 2q^{2} + 4q^{3} + 2q^{4} + 2q^{5} - 4q^{6} + 2q^{7} + O(q^{8})$	+ − +	$+1$
410.2.a.h	2	$\mathbb{Q}(\sqrt{6})$	$2q + 2q^{2} + 2q^{4} + 2q^{5} - 4q^{7} + O(q^{8})$	− − −	$+1$
410.2.a.i	3	degree 3	$3q + 3q^{2} + 3q^{4} - 3q^{5} + 6q^{7} + O(q^{8})$	− + +	$+1$

Hecke characteristic polynomials

The eigenvalue of $T = T_{3} + 3T_{7}$ generates each orbit's coefficient field; on the newspace its characteristic polynomial factors over $\mathbb{Q}$ as one irreducible factor per orbit:

Orbit	Characteristic polynomial of $T$
410.2.a.a	$x - 4$
410.2.a.b	$x + 6$
410.2.a.c	$x + 8$
410.2.a.d	$x - 12$
410.2.a.e	$x^{2} + 8x - 4$
410.2.a.f	$x^{2} - 14x + 46$
410.2.a.g	$x^{2} - 10x - 128$
410.2.a.h	$x^{2} + 12x + 30$
410.2.a.i	$x^{3} - 18x^{2} + 100x - 164$

Dimensions

Newforms $S_{2}^{\mathrm{new}}(\Gamma_0(410))$	15
Old forms	44
Cusp forms $S_{2}(\Gamma_0(410))$	59
Eisenstein series $E_{2}(\Gamma_0(410))$	7
Modular forms $M_{2}(\Gamma_0(410))$	66

Decomposition of the old subspace

$S_{2}^{\mathrm{old}}(\Gamma_0(410)) =$ $S_{2}^{\mathrm{new}}(\Gamma_0(41))^{\oplus 4}$ $\oplus$ $S_{2}^{\mathrm{new}}(\Gamma_0(82))^{\oplus 2}$ $\oplus$ $S_{2}^{\mathrm{new}}(\Gamma_0(205))^{\oplus 2}$

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.222 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, 5, 10, 41, 82, 205, 410]: [0, 1, 1, 3, 4, 12, 22, 66] (certified at ell = 2147482921)
T = [(3, 1), (7, 3)]; h of degree 15 = 1 x 15 (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(410, 2)

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

cargo run --release -p sagebrush-web --example atlas -- 410:2 1000

← 409.2.a · 411.2.a →