SPLITTING AND SEPARATION

Two processes, ${\bf A}$ and ${\bf B}$, which ordinarily act simultaneously, may or may not be interconnected. The case where they are independent is called full separation. In this case it is often useful, for thought and for computation, to imagine process ${\bf A}$ going to completion before process ${\bf B}$ is begun. Where the processes are interconnected it is possible to allow ${\bf A}$ to run for a short while, then switch to ${\bf B}$, and continue in alternation. This alternation approach is called splitting.