Triangle wave --- linear ramps up and down, smooth peaks with 1/n² Fourier decay (only odd harmonics)
Standard analysis sees: rich, high-entropy values; red spectrum (low-frequency / 1-over-f power); strongly periodic; low-complexity (predictable, not noise-like); low-dimensional; stationary. The atlas finds no named structure, but the source is distinctively extreme on Attractor Reconstruction:kaplan_yorke_dim (-2.2z) — beyond what the standard bank predicts for it.
Attractor Reconstruction:kaplan_yorke_dim | -2.2z | bank-miss 1.9σ |








_(centered)/signed_log_z/Triangle_Wave.png)
_(centered)/xy_path/Triangle_Wave.png)

/barcode/Triangle_Wave.png)
/d_curve/Triangle_Wave.png)








/phi_spectrum/Triangle_Wave.png)










/default/Triangle_Wave.png)
/default/Triangle_Wave.png)


| Nearest neighbor | Distance | |
|---|---|---|
| Damped Pendulum | 3.67 | cross-domain |
| 2-Torus Quasiperiodic | 3.98 | cross-domain |
| Clipped Sine | 4.12 |
Attractor Reconstruction › Attractor Reconstruction:d2_saturation | rank 3/298 | 0.9972 |
D4 Triality › D4 Triality:edge_ortho_polarity | rank 5/298 | 0.7393 |
Fisher Information › Fisher Information:effective_dimension | rank 5/298 | 15.9996 |
Fisher Information › Fisher Information:log_det_fisher | rank 294/298 | 44.3616 |
Fisher Information › Fisher Information:trace_fisher | rank 294/298 | 256.0061 |
Modular Residue › Modular Residue:occupancy_entropy | rank 3/298 | 1.0000 |
Multi-Scale Wasserstein › Multi-Scale Wasserstein:w_max_ratio | rank 5/298 | 1355.0116 |
Nonstationarity › Nonstationarity:metric_volatility | rank 4/298 | 3.2055 |
Ordinal Partition › Ordinal Partition:time_irreversibility | rank 296/298 | 0.0030 |
Visibility Graph › Visibility Graph:avg_clustering_coeff | rank 295/298 | 0.1777 |
Wasserstein › Wasserstein:entropy | rank 5/298 | 5.0000 |
Wasserstein › Wasserstein:concentration | rank 294/298 | 1.0088 |
Wasserstein › Wasserstein:dist_from_uniform | rank 294/298 | 0.0005 |