Question - What Is The Difference Between Concatenation And Intersection Of Two Fa’s Also What Is The Difference Among Union Of Two Fa’s And Addition Of Them?
Answer -
In intersection of two FA’s only those strings are accepted which are independently accepted by both FA’s, while in concatenation of two FA’s only those strings will be accepted in which first part of string is accepted by first FA and remaining part of string is accepted by the second FA.
While taking union of two FA’s one can represent it using + sign. So (FA1 U FA2) and (FA + FA2) both are same. There is no difference between them.