Atlas › Modular forms › Weight 6 › Level 52 › 52.6.a

Newspace 52.6.a: $S_{6}^{\mathrm{new}}(\Gamma_0(52))$

Newforms

Label	Dim	Coefficient field	Trace form	AL signs
52.6.a.a	1	$\mathbb{Q}$	$q - 5q^{3} - 3q^{5} + 53q^{7} + O(q^{8})$	−
52.6.a.b	1	$\mathbb{Q}$	$q + 17q^{3} - 91q^{5} - 233q^{7} + O(q^{8})$	−
52.6.a.c	3	degree 3	$3q + 12q^{3} + 8q^{5} + 138q^{7} + O(q^{8})$	+

Hecke characteristic polynomials

The eigenvalue of $T = T_{3} + T_{5}$ 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 $T$
52.6.a.a	$x + 8$
52.6.a.b	$x + 74$
52.6.a.c	$x^{3} - 20x^{2} - 14116x - 38128$

Dimensions

Newforms $S_{6}^{\mathrm{new}}(\Gamma_0(52))$	5
Old forms	27
Cusp forms $S_{6}(\Gamma_0(52))$	32
Eisenstein series $E_{6}(\Gamma_0(52))$	6
Modular forms $M_{6}(\Gamma_0(52))$	38

Decomposition of the old subspace

$S_{6}^{\mathrm{old}}(\Gamma_0(52)) =$ $S_{6}^{\mathrm{new}}(\Gamma_0(4))^{\oplus 2}$ $\oplus$ $S_{6}^{\mathrm{new}}(\Gamma_0(13))^{\oplus 3}$ $\oplus$ $S_{6}^{\mathrm{new}}(\Gamma_0(26))^{\oplus 2}$

Provenance

Stored in the atlas: computed by Sagebrush's modular symbols engine in 0.236 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, 4, 13, 26, 52]: [1, 2, 4, 7, 19, 38] (certified at ell = 2147483629)
T = [(3, 1), (5, 1)]; h of degree 5 = 1 x 5 (phi(ord eps) x dim S_k^new); 2 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(52, 6)

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

cargo run --release -p sagebrush-web --example atlas -- 52:6 1000

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