Additivity of the contact process
= Additivity of the contact process
Reachability in the graphical representation gives
$$
\xi_t^{A\cup B}=\xi_t^A\cup\xi_t^B.
$$
= Additivity of the contact process
Reachability in the graphical representation gives
$$
\xi_t^{A\cup B}=\xi_t^A\cup\xi_t^B.
$$