Type-II intermittency near a subcritical Neimark-Sacker (Hopf) bifurcation. The laminar phase is a slow spiral: a rotation whose amplitude grows smoothly until it leaves the channel, bursts, and is reinjected near zero. Distinct from Pomeau-Manneville type-I (tangent bifurcation) and type-III (period-doubling); laminar length scales as epsilon^-1
Standard analysis sees: heavy-tailed. The atlas finds no named structure, but the source is distinctively extreme on SL(2,ℝ) (Thurston):parabolic_fraction (+6.4z) — beyond what the standard bank predicts for it. It sits beside Bearing Inner in the atlas (standard-bank rank 54) — a neighbor conventional features miss.
SL(2,ℝ) (Thurston):parabolic_fraction | +6.4z | bank-miss 2.3σ |
Boltzmann:dominant_lag | +3.9z | bank-miss 1.8σ |
Fisher Information:geodesic_velocity | +3.1z | bank-miss 3.3σ |
Fractal (Mandelbrot):interior_fraction | +2.4z | bank-miss 1.7σ |
Hyperbolic (Poincaré):spatio_temporal_corr | +2.1z | bank-miss 2.3σ |









_(centered)/signed_log_z/Intermittency_Type-II.png)
_(centered)/xy_path/Intermittency_Type-II.png)

/barcode/Intermittency_Type-II.png)
/d_curve/Intermittency_Type-II.png)








/phi_spectrum/Intermittency_Type-II.png)










/default/Intermittency_Type-II.png)
/default/Intermittency_Type-II.png)


| Nearest neighbor | Distance | |
|---|---|---|
| IMS Bearing Failed | 4.00 | cross-origin |
| Bearing Inner | 4.16 | cross-origin |
| MFPT Inner Unloaded | 4.21 | cross-origin |
Boltzmann › Boltzmann:nn_dominance | rank 303/307 | 0.0272 |
Fisher Information › Fisher Information:geodesic_velocity | rank 5/307 | 1.6192 |
Hyperbolic (Poincaré) › Hyperbolic (Poincaré):spatio_temporal_corr | rank 4/307 | 0.8309 |
Hyperbolic (Poincaré) › Hyperbolic (Poincaré):mean_hyperbolic_radius | rank 303/307 | 0.1525 |
Ordinal Partition › Ordinal Partition:memory_order | rank 3/307 | 0.9013 |
Predictability › Predictability:transition_entropy_variance | rank 3/307 | 0.0685 |
SL(2,ℝ) (Thurston) › SL(2,ℝ) (Thurston):parabolic_fraction | rank 3/307 | 0.7010 |
SL(2,ℝ) (Thurston) › SL(2,ℝ) (Thurston):hyperbolic_fraction | rank 303/307 | 0.0107 |
SL(2,ℝ) (Thurston) › SL(2,ℝ) (Thurston):mean_spectral_radius | rank 305/307 | 1.0172 |
Zipf–Mandelbrot (8-bit) › Zipf–Mandelbrot (8-bit):zipf_r_squared | rank 4/307 | 0.9945 |