Lecture14 The Halting Problem Prof Amos Israeli In this lecture we present an undecidable language The language that we prove to be undecidable is a very natural language namely the language consisting of pairs of the form where ID: 302177 Download Presentation

Lecture4: Non Regular Languages. Prof. Amos Israeli. Motivate the Pumping Lemma. . Present and demonstrate the . pumping. concept.. Present and prove the . Pumping Lemma. .. Use the pumping lemma to .

Lecture2: Non Deterministic Finite Automata. Prof. Amos Israeli. Let and be 2 regular languages above the same alphabet, . We define the 3 . Regular Operations. :. Union. : ..

Lecture7: . PushDown . Automata (Part 1). Prof. Amos Israeli. In this lecture we introduce . Pushdown Automata. , a computational model equivalent to context free languages.. A pushdown automata is an NFA .

Lecture2: Non Deterministic Finite . Automata (cont.). Prof. Amos Israeli. Roadmap for Lecture. In this lecture we:. Prove that NFA-s and DFA-s are . equivalent. . . Present . the three regular operations..

Lecture5: Context . Free Languages. Prof. Amos Israeli. On the last lecture we completed our study of regular languages. (There is still a lot to learn but our time is limited…).. Introduction and Motivation.

Lecture14: Recap. Prof. Amos Israeli. Regular languages – Finite automata.. Context free languages – Stack automata.. Decidable languages – Turing machines.. Undecidability.. Reductions.. Subjects.

Lecture12: . Decidable Languages. Prof. Amos Israeli. In this lecture we review some decidable languages related to regular and context free languages.. In the next lecture we will present a undecidable language..

Lecture15: . Reductions. Prof. Amos Israeli. The rest of the course deals with an important tool in Computability and Complexity theories, namely: . Reductions. .. . The reduction technique enables us to use the undecidability of to prove many other languages undecidable..

Lecture13: . Mapping Reductions. Prof. Amos Israeli. So far, we presented several reductions: . From to , from to , from to , from to , and several other..

Lecture10: . Turing Machines. Prof. Amos Israeli. In this lecture we introduce . Turing Machines . and discuss some of their properties.. Introduction and Motivation. . 2. A . Turing Machine . is a finite state machine augmented with an infinite tape..

Lecture14: . The Halting Problem. Prof. Amos Israeli. In this lecture we present an undecidable language.. The language that we prove to be undecidable is a very natural language namely the language consisting of pairs of the form where .

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