Percolation Cluster Hull & Frontier

Fractal perimeter of spanning cluster — d_f = 7/4 at p_c ≈ 0.5927
Largest cluster:
Hull length:
Spanning:
log(Hull)/log(Size):
Site percolation: each site occupied with probability p. Critical threshold p_c ≈ 0.5927 (Kesten 1980 bond, site exact unknown).

Spanning cluster: a connected cluster touching both left and right edges.

Hull (external frontier): boundary between the spanning cluster and empty space. Fractal dimension d_f = 7/4 (Grossman-Aharony 1986).

Colors: cyan=spanning cluster, blue=other clusters, red=hull boundary sites, yellow=isolated sites.

Bottom chart: measures hull length vs cluster size across multiple realizations to estimate d_f.