🌱 The Classic Nonregular Language: L = { aⁿ bⁿ | n ≥ 0 } This language...
Theory of Computation
🌱 What Does “Properly Nested” Mean? A string of parentheses is properly nested if: Here are examples:...
🌱 What Is a Context-Free Language? A Context-Free Language is a set of strings that can be...
🌱 What Is a Context-Free Language? A Context-Free Language (CFL) is a type of formal language that...
🌱 What We’re Trying to Prove We want to show: All strings built from a well-quasi-ordered alphabet...
⭐ What Higman’s Theorem Says (in human words) Here is the gentle version: If your alphabet is...
🌱 what is the idea behind the theorem? Higman’s Theorem is about sequences (think: strings made from...
⭐ Why Do We Use the Pumping Lemma? We use it mainly for one big purpose: ✦...
🌱 What Is the Pumping Lemma? (In simple words) Think of a DFA like a small machine...
🌼 The Big Idea (in simple words) Think of a regular expression (RE) as a recipe.It tells...