Tribonacci Word

symbolic-dynamics · 37 views
symbolic-dynamicssymbolic

What It Is

Cubic-Pisot Sturmian-like: substitution a→ab, b→ac, c→a. Substitution matrix [[1,1,0],[1,0,1],[1,0,0]] has eigenvalue Tribonacci constant ≈1.839 (real root of x³=x²+x+1). Ternary alphabet, cubic algebraic ratio --- a degree-3 Pisot contrast class against degree-2 Fibonacci/Pell.

Interpretation

Standard analysis sees: few distinct values; anti-correlated (alternating); anti-persistent; blue spectrum (high-frequency power); homoskedastic; monofractal; stationary. The atlas finds no named structure, but the source is distinctively extreme on Julia Set:potential_variance (+4.4z) — beyond what the standard bank predicts for it.

What standard analysis sees
tail heaviness0.42
asymmetry0.79
occupancy0.10
short-range corr0.04
long-range memory0.06
spectral colour0.96
periodicity0.85
complexity0.28
time-irreversibility0.51
volatility clustering0.13
multifractality0.05
dimensionality0.54
nonstationarity0.09
What the atlas adds
Atlas-extreme metrics the standard bank can’t predict for this source
Julia Set:potential_variance+4.3zbank-miss 2.0σ
Julia Set:potential_smoothness+4.2zbank-miss 2.0σ
Modular Residue:cycle_fraction+3.1zbank-miss 1.1σ

Composition

dtypeuint8
range[0, 255]
unique values3 / 16384
mean ± std78.8 ± 95.3

Fixed alphabet — only 3 distinct symbols across 16384 samples.

Render Gallery

Atlas Position

Nearest neighborDistance
Periodic Word3.91
Collatz Cycle Word4.00cross-origin
Pell Word4.22

Open in Atlas →

Which Geometries Light Up

Catch24 › Catch24:SC_FluctAnal_2_dfa_50_1_2_logi_prop_r1rank 306/3060.1200
Multi-Scale Wasserstein › Multi-Scale Wasserstein:w_max_ratiorank 4/3061526.7181
Sol (Thurston) › Sol (Thurston):integrated_walk_smoothnessrank 302/306-0.1236
in signal-synthesis(last) →
alphabetical
← / → within domain · ⇧← / ⇧→ alphabetical · ⇧← / ⇧→ inside an open render = same view across sources