WS clustering: C(0) = 1/2 at K=2, C(p=1/2)/C(0) = 1/8

Exact closed-form evaluation of the Watts-Strogatz clustering at two canonical points. Regular ring with K = 2 neighbours per side (degree 2K = 4): C(0) = 3(K-1)/(2(2K-1)) = 3·1/(2·3) = 1/2 exactly (Watts-Strogatz 1998 combinatorial…