Step 1: Understanding the transition function.
In a Turing Machine, the transition function \( \delta \) specifies the next state based on the current state \( q \) and the symbol \( a \) read from the tape. The function is defined for all pairs \( (q, a) \), meaning for each state and tape symbol combination, there is a defined transition.
Step 2: Conclusion.
Thus, the transition function \( \delta \) is defined for all elements of \( (q, a) \in Q \times \Gamma \), making the correct answer (3).
Find the least upper bound and greatest lower bound of \( S = \{X, Y, Z\} \) if they exist, of the poset whose Hasse diagram is shown below:
Suppose \( D_1 = (S_1, \Sigma, q_1, F_1, \delta_1) \) and \( D_2 = (S_2, \Sigma, q_2, F_2, \delta_2) \) are finite automata accepting languages \( L_1 \) and \( L_2 \), respectively. Then, which of the following languages will also be accepted by the finite automata:
(A) \( L_1 \cup L_2 \)
(B) \( L_1 \cap L_2 \)
(C) \( L_1 - L_2 \)
(D) \( L_2 - L_1 \)
Choose the correct answer from the options given below: