Pure sinusoid --- perfectly periodic, single-frequency, minimal complexity. The baseline for all oscillatory comparisons
Standard analysis sees: bounded / light-tailed; smooth / autocorrelated; long-range memory (persistent); strongly periodic; low-complexity (predictable, not noise-like); volatility-clustering (bursty); low-dimensional. The atlas additionally detects Persistent Homology:max_h1_lifetime, Multifractal Spectrum:hurst_estimate. It sits beside Period-Doubled Wave in the atlas (standard-bank rank 51) — a neighbor conventional features miss.
Nonstationarity:dynamic_coupling | +2.5z | bank-miss 1.7σ |
Nonstationarity:trajectory_dim | -2.1z | bank-miss 2.2σ |









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

/barcode/Sine_Wave.png)
/d_curve/Sine_Wave.png)








/phi_spectrum/Sine_Wave.png)










/default/Sine_Wave.png)
/default/Sine_Wave.png)


| Nearest neighbor | Distance | |
|---|---|---|
| Damped Pendulum | 2.49 | cross-origin |
| Period-Doubled Wave | 2.74 | |
| Duffing Oscillator | 3.47 | cross-origin |
Attractor Reconstruction › Attractor Reconstruction:d2_saturation | rank 5/307 | 0.9958 |
Catch24 › Catch24:FC_LocalSimple_mean1_tauresrat | rank 2/307 | 1.0003 |
Catch24 › Catch24:CO_Embed2_Dist_tau_d_expfit_meandiff | rank 307/307 | 0.0000 |
Chladni › Chladni:captured_power_fraction | rank 307/307 | 0.0001 |
Hodge–Laplacian › Hodge–Laplacian:curl_div_ratio | rank 1/307 | 7.0095 |
Hodge–Laplacian › Hodge–Laplacian:solenoidal_fraction | rank 1/307 | 0.9989 |
Laplacian › Laplacian:cross_scale_curvature_coherence | rank 2/307 | 0.9995 |
Laplacian › Laplacian:curvature_autocorrelation | rank 2/307 | 0.9995 |
Laplacian › Laplacian:biharmonic_ratio | rank 307/307 | 0.0000 |
Navier-Stokes › Navier-Stokes:sl_fit_quality | rank 307/307 | -1.0000 |
Persistent Homology › Persistent Homology:max_h1_lifetime | rank 2/307 | 0.9163 |
Spectral Analysis › Spectral Analysis:spectral_peakedness | rank 3/307 | 0.9812 |
Spectral Analysis › Spectral Analysis:spectral_r2 | rank 5/307 | 0.9594 |
Symplectic › Symplectic:flux_sign_persistence | rank 4/307 | 288.8150 |
Visibility Graph › Visibility Graph:degree_exponent_gamma | rank 303/307 | 0.3237 |
Wavelet Cascade › Wavelet Cascade:scale_gini_dispersion | rank 304/307 | 0.0078 |
p-Variation › p-Variation:volatility_clustering | rank 3/307 | 0.9996 |