1D observable from dense quasiperiodic orbit on T^2 (frequencies sqrt 2, sqrt 3). Ground-truth intrinsic dimension d=2. Ergodic but not mixing.
Standard analysis sees: rich, high-entropy values; strongly periodic; low-complexity (predictable, not noise-like); stationary. The atlas finds no named structure, but the source is distinctively extreme on Spirograph:petal_symmetry (+3.5z) — beyond what the standard bank predicts for it.
Spirograph:petal_symmetry | +3.5z | bank-miss 1.2σ |
Bispectrum:bicoherence_concentration | -2.3z | bank-miss 2.3σ |








_(centered)/signed_log_z/2-Torus_Quasiperiodic.png)
_(centered)/xy_path/2-Torus_Quasiperiodic.png)

/barcode/2-Torus_Quasiperiodic.png)
/d_curve/2-Torus_Quasiperiodic.png)








/phi_spectrum/2-Torus_Quasiperiodic.png)










/default/2-Torus_Quasiperiodic.png)
/default/2-Torus_Quasiperiodic.png)


| Nearest neighbor | Distance | |
|---|---|---|
| 3-Torus Quasiperiodic | 2.62 | |
| 4-Torus Quasiperiodic | 2.98 | |
| 5-Torus Quasiperiodic | 3.40 |
Chladni › Chladni:modal_nodal_cascade | rank 296/298 | -0.4942 |
Higher-Order Statistics › Higher-Order Statistics:c3_energy | rank 294/298 | 0.0004 |
Isochronicity › Isochronicity:frequency_shear | rank 1/298 | 0.9604 |
Moiré › Moiré:moire_invariance_breadth | rank 298/298 | 0.0025 |
Navier-Stokes › Navier-Stokes:sl_fit_quality | rank 297/298 | -0.9987 |
Septagonal (Danzer) › Septagonal (Danzer):cubic_coherence | rank 2/298 | 0.2771 |
Septagonal (Danzer) › Septagonal (Danzer):z_conjugate | rank 3/298 | 0.7125 |
Sol (Thurston) › Sol (Thurston):path_length | rank 295/298 | 21730.2379 |
Spirograph › Spirograph:petal_symmetry | rank 3/298 | 0.6806 |