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by carlehewitt 2695 days ago
Induction is the most important principle for proving properties of programs.

The principle of Actor induction is:

   1. Suppose that an Actor x has property P when it is created.

   2. Further suppose that if x has property P when it receives a communication, 
      then it has property P when it has processed the communication.

   3. Then x always has the property P.