3-segment Lagrangian pendulum chain, equal m=L=1 --- Hamiltonian 3-DOF conservative chaos with sin-coupling. Direct extension of Double Pendulum by one link; meant to populate the multi-DOF pendulum family the way Lorenz-96 {N=4,8,36} populates the dissipative-chain family. RK4 with dt=0.002. Output: angular velocity of bottom segment.
Standard analysis sees: smooth / autocorrelated; long-range memory (persistent); red spectrum (low-frequency / 1-over-f power); low-complexity (predictable, not noise-like); volatility-clustering (bursty); multifractal. The atlas finds no named structure, but the source is distinctively extreme on Moiré:moire_invariance_breadth (+2.8z) — beyond what the standard bank predicts for it.
Moiré:moire_invariance_breadth | +2.8z | bank-miss 1.4σ |








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

/barcode/Triple_Pendulum.png)
/d_curve/Triple_Pendulum.png)








/phi_spectrum/Triple_Pendulum.png)










/default/Triple_Pendulum.png)
/default/Triple_Pendulum.png)


| Nearest neighbor | Distance | |
|---|---|---|
| FPUT N=16 | 2.81 | cross-domain |
| Lorenz-96 N=8 | 3.10 | cross-domain |
| Double Pendulum | 3.14 |
Ammann-Beenker (Octagonal) › Ammann-Beenker (Octagonal):convergent_resonance | rank 5/298 | 0.8608 |
Moiré › Moiré:moire_invariance_breadth | rank 4/298 | 0.0359 |
Navier-Stokes › Navier-Stokes:sl_fit_quality | rank 2/298 | 0.9480 |
Wasserstein › Wasserstein:recurrence_distance | rank 3/298 | 0.0922 |