REGULAR EXPRESSIONS : Regular Languages, Operations on Regular Languages, Regular Expressions and its rule, Examples for Regular Expressions,Identities of Regular Expressions,Arden's Theorem, Designing Regular Expressions,Rel b/w Finite Automata(FA) and regular Expressions (RE),Conversion of Regular Expression to Finite Automata and its Examples, Applications of Pumping Lemma, Pumping Lemma for RE,Minimization of DFA using Equivalance classes, Types of Equivalences.