Almost-Mathieu operator at critical coupling λ=2 with golden-ratio incommensurate potential --- multifractal eigenstate intensity (deterministic multifractality, canonical exemplar from quasiperiodic origin)
Standard analysis sees: no strongly notable standard properties. The atlas finds no named structure, but the source is distinctively extreme on G2 Root System:kurtosis_differential (-14.5z) — beyond what the standard bank predicts for it. It sits beside Solar Flares Daily Peak in the atlas (standard-bank rank 40) — a neighbor conventional features miss.
G2 Root System:kurtosis_differential | -14.5z | bank-miss 1.2σ |
Symplectic:windowed_area_cv | +6.8z | bank-miss 1.4σ |
Mostow Rigidity:spectral_rigidity | -6.4z | bank-miss 1.1σ |
Higher-Order Statistics:skew_mean | +5.6z | bank-miss 1.5σ |
2-adic:mean_distance | -4.3z | bank-miss 1.1σ |
Higher-Order Statistics:kurt_max | +4.1z | bank-miss 1.3σ |
Zariski:nonsep_fraction | +4.1z | bank-miss 2.3σ |
Higher-Order Statistics:c3_energy | +3.6z | bank-miss 2.3σ |








_(centered)/signed_log_z/Aubry-André_Critical.png)
_(centered)/xy_path/Aubry-André_Critical.png)

/barcode/Aubry-André_Critical.png)
/d_curve/Aubry-André_Critical.png)








/phi_spectrum/Aubry-André_Critical.png)










/default/Aubry-André_Critical.png)
/default/Aubry-André_Critical.png)


| Nearest neighbor | Distance | |
|---|---|---|
| Solar Flares Daily Peak | 4.23 | cross-domain |
| Anderson 1D Localized | 4.66 | |
| Fibonacci Tight-Binding | 4.67 |
2-adic › 2-adic:distance_entropy | rank 294/298 | 0.7532 |
2-adic › 2-adic:mean_distance | rank 295/298 | 0.1079 |
Attractor Reconstruction › Attractor Reconstruction:lyap_sum | rank 2/298 | 3.5017 |
Attractor Reconstruction › Attractor Reconstruction:lyap_entropy | rank 3/298 | 3.5017 |
Catch24 › Catch24:DN_HistogramMode_10 | rank 1/298 | 3.6296 |
Catch24 › Catch24:DN_HistogramMode_5 | rank 1/298 | 7.3919 |
Catch24 › Catch24:CO_Embed2_Dist_tau_d_expfit_meandiff | rank 295/298 | 0.0142 |
Catch24 › Catch24:DN_Mean | rank 298/298 | 0.0018 |
Catch24 › Catch24:DN_Spread_Std | rank 298/298 | 0.0133 |
Chladni › Chladni:temporal_burstiness | rank 1/298 | 0.7671 |
Continued Fraction › Continued Fraction:gauss_kuzmin_distance | rank 1/298 | 0.8724 |
G2 Root System › G2 Root System:kurtosis_differential | rank 298/298 | -37.1001 |
Higher-Order Statistics › Higher-Order Statistics:kurt_max | rank 1/298 | 7.7395 |
Higher-Order Statistics › Higher-Order Statistics:skew_mean | rank 1/298 | 3.2447 |
Hodge–Laplacian › Hodge–Laplacian:source_fraction | rank 4/298 | 0.6662 |
Klein Bottle › Klein Bottle:rank_deficit | rank 3/298 | 0.9919 |
Klein Bottle › Klein Bottle:rank_deficit_max | rank 4/298 | 0.9996 |
Mostow Rigidity › Mostow Rigidity:distance_rigidity | rank 296/298 | 0.0361 |
Mostow Rigidity › Mostow Rigidity:spectral_rigidity | rank 297/298 | 0.5348 |
Multi-Scale Wasserstein › Multi-Scale Wasserstein:w_fine | rank 294/298 | 0.0011 |
Multi-Scale Wasserstein › Multi-Scale Wasserstein:w_mean | rank 295/298 | 0.0011 |
Multi-Scale Wasserstein › Multi-Scale Wasserstein:w_std | rank 295/298 | 0.0002 |
Piecewise-Linear › Piecewise-Linear:envelope_area | rank 298/298 | 29.0448 |
Predictability › Predictability:cond_entropy_k1 | rank 294/298 | 0.0135 |
SL(2,ℝ) (Thurston) › SL(2,ℝ) (Thurston):lyapunov_exponent | rank 1/298 | 1.9883 |
Sol (Thurston) › Sol (Thurston):z_variance | rank 297/298 | 0.0176 |
Spherical S² › Spherical S²:concentration | rank 2/298 | 0.9992 |
Spherical S² › Spherical S²:hemisphere_balance | rank 294/298 | 0.0003 |
Spherical S² › Spherical S²:angular_spread | rank 296/298 | 0.0453 |
Spirograph › Spirograph:gear_rationality | rank 294/298 | 0.5052 |
Symplectic › Symplectic:phase_reflection_symmetry | rank 1/298 | 0.9999 |
Symplectic › Symplectic:recurrence_rate | rank 1/298 | 0.9831 |
Symplectic › Symplectic:windowed_area_cv | rank 2/298 | 9.2084 |
S² × ℝ (Thurston) › S² × ℝ (Thurston):sphere_concentration | rank 2/298 | 0.9994 |
S² × ℝ (Thurston) › S² × ℝ (Thurston):great_circle_dispersion | rank 295/298 | 0.0071 |
Ulam Spiral (Square) › Ulam Spiral (Square):polynomial_concentration | rank 294/298 | 0.0204 |
Visibility Graph › Visibility Graph:degree_r_squared | rank 2/298 | 0.9778 |
Wasserstein › Wasserstein:dist_from_uniform | rank 1/298 | 0.4837 |
Wasserstein › Wasserstein:concentration | rank 2/298 | 31.7109 |
Wasserstein › Wasserstein:entropy | rank 297/298 | 0.0925 |
Wavelet Cascade › Wavelet Cascade:cascade_coupling | rank 2/298 | 0.9350 |
Zariski › Zariski:nonsep_fraction | rank 2/298 | 0.9767 |
Zipf–Mandelbrot (16-bit) › Zipf–Mandelbrot (16-bit):gini_coefficient | rank 2/298 | 0.9744 |
Zipf–Mandelbrot (8-bit) › Zipf–Mandelbrot (8-bit):gini_coefficient | rank 3/298 | 0.9629 |
Zipf–Mandelbrot (8-bit) › Zipf–Mandelbrot (8-bit):hapax_ratio | rank 3/298 | 0.3175 |