Parameters
Update Rule
if s=0:
a=sick nbrs
b=ill nbrs
s'=⌊a/k₁+b/k₂⌋
if 0<s<k:
s'=avg(nbrs)+g
if s=k:
s'=0 (recover)
a=sick nbrs
b=ill nbrs
s'=⌊a/k₁+b/k₂⌋
if 0<s<k:
s'=avg(nbrs)+g
if s=k:
s'=0 (recover)
Emergence
Spiral waves emerge from random initial conditions — no central pacemaker needed. Analogous to cardiac arrhythmias and the BZ reaction.