Solution to Sipser Exercise 1.11 | Theory of Computation

Are you studying Michael Sipser's Introduction to the Theory of Computation and stuck on Exercise 1.11? This video provides a step-by-step, comprehensive solution and proof demonstration for this classic problem. In this lesson, we prove that every Nondeterministic Finite Automaton (NFA) can be converted into an equivalent new NFA that has exactly one accept state. What You'll Learn in This Video: 🧠 The Core Proof: We walk through the formal construction and transformation process required to modify any existing NFA N1 into a new NFA N2 with a single final state. 💡 Intuition and Logic: Understand why this transformation works, and how the epsilon transitions are used to redirect acceptance from multiple final states into one new, centralized accept state. 📚 Sipser Chapter 1 Review: This proof reinforces key concepts from Chapter 1 (Regular Languages), particularly the formal definition of NFAs and the power of non-determinism. ✅ Formal Correctness: We demonstrate the necessary conditions to ensure the original NFA and the new NFA recognize the exact same language L(N1) = L(N2). Optimize Your Learning: This technique is fundamental to understanding the equivalence between different models of computation and is a must-know for exams in Formal Languages and Automata Theory. Click the "Like" button if this proof makes sense, and subscribe for more clear, detailed solutions to challenging computer science and mathematics problems! Textbook: Michael Sipser, Introduction to the Theory of Computation Topic: Non-deterministic Finite Automata (NFA), Regular Languages, Proofs by Construction Related Exercise: Sipser 1.10 (NFA to NFA with one start state) timestamps⌚ 0:00Intro 0:18Explanation 5:15Outro #theoryofcomputation #computerscience #automatatheory #SipserBook #CompTheory