Automata Theory Questions
A non-deterministic finite automaton (NFA) is a theoretical model of computation in automata theory. It consists of a set of states, a set of input symbols, a transition function, an initial state, and a set of final states. Unlike a deterministic finite automaton (DFA), an NFA can have multiple possible transitions for a given input symbol from a particular state. This non-determinism allows for more flexibility in the automaton's behavior. When processing an input string, an NFA can be in multiple states simultaneously, and it accepts the input if there exists at least one possible sequence of transitions that leads to a final state.