Collatz Stopping Times

number-theory · 37 views
number-theoryarithmetic

What It Is

Collatz total stopping times --- how many map steps (counting both the n/2 halvings and the 3n+1 steps) each integer takes to reach 1. Wildly erratic, with typical values around 7·log₂(n) (asymptotic mean 3·ln(n)/ln(4/3) ≈ 7.23·log₂(n); fitted slope ≈ 7.0 over n in [1e4, 5e5]) but enormous outliers

Interpretation

Standard analysis sees: no strongly notable standard properties. The atlas finds no named structure, but the source is distinctively extreme on Spirograph:gear_rationality (-3.1z) — beyond what the standard bank predicts for it. It sits beside Surface Wind (ORD 5-min) in the atlas (standard-bank rank 60) — a neighbor conventional features miss.

What standard analysis sees
tail heaviness0.62
asymmetry0.78
occupancy0.22
short-range corr0.48
long-range memory0.58
spectral colour0.49
periodicity0.35
complexity0.45
time-irreversibility0.25
volatility clustering0.49
multifractality0.54
dimensionality0.75
nonstationarity0.59
What the atlas adds
Atlas-extreme metrics the standard bank can’t predict for this source
Spirograph:gear_rationality-3.1zbank-miss 1.0σ

Composition

dtypefloat64
range[24, 399]
unique values45 / 16384
mean ± std134 ± 56.6

Render Gallery

Atlas Position

Nearest neighborDistance
Surface Wind (ORD 5-min)4.18cross-origin
Earthquake Magnitudes4.29cross-origin
Poisson Counts4.32cross-origin

Open in Atlas →

Which Geometries Light Up

Navier-StokesNavier-Stokes:ess_rescaling_gainrank 307/307-0.2047
Septagonal (Danzer)Septagonal (Danzer):z_conjugaterank 303/307-0.6062
Visibility GraphVisibility Graph:degree_r_squaredrank 5/3070.9600
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