Can we put more than one element in stack at a time. Actually I am asking that this transition function is valid for PDA: ∆(q,a,z)=(q',aaz) Where:
- q and q' are states
- a is input symbol
- z is starting stack symbol
- This transition function is doing that if PDA is in q state and read input a and top element of stack is z then it goes to state q' and put aa in stack. Is above transition. Function is valid for PDA. And my college teacher said that it is true but I have never read this in any book that it is true neither I have read this is false.