Driven damped nonlinear oscillator --- strange attractor with broad amplitude visits
Standard analysis sees: rich, high-entropy values; smooth / autocorrelated; long-range memory (persistent); red spectrum (low-frequency / 1-over-f power); low-complexity (predictable, not noise-like); volatility-clustering (bursty). The atlas finds no named structure, but the source is distinctively extreme on Laplacian:curvature_autocorrelation (+2.0z) — beyond what the standard bank predicts for it. It sits beside Sine Wave in the atlas (standard-bank rank 51) — a neighbor conventional features miss.
Laplacian:curvature_autocorrelation | +2.0z | bank-miss 1.1σ |








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| Nearest neighbor | Distance | |
|---|---|---|
| Hénon-Heiles | 2.85 | |
| Period-Doubled Wave | 2.89 | cross-domain |
| Chua's Circuit | 3.00 | cross-domain |
Chladni › Chladni:modal_nodal_cascade | rank 297/298 | -0.5758 |
Hodge–Laplacian › Hodge–Laplacian:curl_div_ratio | rank 5/298 | 5.6855 |
Laplacian › Laplacian:cross_scale_curvature_coherence | rank 5/298 | 0.9985 |
Laplacian › Laplacian:curvature_autocorrelation | rank 5/298 | 0.9985 |
Ulam Spiral (Square) › Ulam Spiral (Square):diagonal_alignment | rank 294/298 | -0.2512 |