Answer: Theory of computation/Computation Theory/Automata Theory
Explanation: Automata theory is also known as the theory of computation.this theory describes about the simple machines in accordance with the computation logic.It is used in computer science field as well as mathematical field.
The function of the theory is to create the understanding of problem solving techniques and function.The functioning of the dynamic system which have the non-constant behavior is the reason for the production of this theory.