Kleene's Theorem

Kleene's theorem is a fundamental concept in computer science and automata theory. It states that regular expressions, which are patterns for matching text, can describe the same languages (sets of strings) as finite automata (simple machines that recognize patterns). Essentially, this means that if you can express a pattern using a regular expression, there exists a finite automaton that can recognize strings matching that pattern, and vice versa. This equivalence showcases the power of both tools in understanding and analyzing how languages can be defined and processed.