'Finite language' diaporamas de présentation

Regular and Nonregular Languages

Regular and Nonregular Languages. Chapter 8. Languages: Regular or Not?. a * b * is regular. { a n b n : n ? 0} is not. { w ? { a , b }* : every a is immediately followed by b } is regular. { w ? { a , b }* : every a has a matching b somewhere} is not

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Regular and Nonregular Languages

Regular and Nonregular Languages. Chapter 8. Languages: Regular or Not?. a * b * is regular. { a n b n : n ? 0} is not. { w ? { a , b }* : every a is immediately followed by b } is regular. { w ? { a , b }* : every a has a matching b somewhere} is not

1.05k views • 69 slides

Regular and Nonregular Languages

Regular and Nonregular Languages. Chapter 8. Languages: Regular or Not?. a * b * is regular. { a n b n : n ? 0} is not. { w ? { a , b }* : every a is immediately followed by b } is regular. { w ? { a , b }* : every a has a matching b somewhere} is not

633 views • 57 slides

Regular and Nonregular Languages

Regular and Nonregular Languages. Chapter 8. Languages: Regular or Not?. a * b * is regular. { a n b n : n ? 0} is not. { w ? { a , b }* : every a is immediately followed by b } is regular. { w ? { a , b }* : every a has a matching b somewhere} is not

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Finite Automata

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Chapter Seven: Regular Expressions

Chapter Seven: Regular Expressions.

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Undecidable problems for Recursively enumerable languages

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CompSci 102 Discrete Math for Computer Science

CompSci 102 Discrete Math for Computer Science. Feb. 2, 2012 Prof. Rodger. Slides from Maggs, lecture developed by Steven Rudich at CMU. Deterministic Finite Automata. Let me show you a machine so simple that you can understand it in less than two minutes. 11. 1. 0. 0,1. 1. 0111. 111.

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CompSci 102 Discrete Math for Computer Science

CompSci 102 Discrete Math for Computer Science. Feb. 2, 2012 Prof. Rodger. Slides from Maggs, lecture developed by Steven Rudich at CMU. Deterministic Finite Automata. Let me show you a machine so simple that you can understand it in less than two minutes. 11. 1. 0. 0,1. 1. 0111. 111.

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Complexity and Computability Theory I

Complexity and Computability Theory I. Lecture #7 Instructor: Rina Zviel-Girshin Leah Epstein. Overview. Nonregular languages The pumping lemma Examples. Are all languages regular?. No. Most of the languages are not regular. Why? A finite automaton has limited memory. Example.

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Properties of Regular Languages

Properties of Regular Languages. Chapter 4. Regular Languages. A language is regular iff it is accepted by some DFA. Example: L = { w ? { a , b }* : every a is immediately followed by a b }. Languages: Regular or Not?. a * b * is regular. { a n b n : n ? 0} is not .

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Properties of Regular Languages

Properties of Regular Languages. Chapter 4. Regular Languages. A language is regular iff it is accepted by some DFA. Example: L = { w ? { a , b }* : every a is immediately followed by a b }. Languages: Regular or Not?. a * b * is regular. { a n b n : n ? 0} is not .

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Discussion #2 Grammars and Languages

Discussion #2 Grammars and Languages. Topics. Set basics Programming languages / compilers Grammars as set generators Languages as defined by grammars. Set Basics. Set = unordered collection of distinct items Notation: curly braces enclose items, e.g. {0, a, xy}

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Discrete Abstractions of Hybrid Systems

Discrete Abstractions of Hybrid Systems. Rajeev Alur, Thomas A. Henzinger, Gerardo Lafferriere and George J. Pappas. Overview. Introduction Decidability Abstractions Questions. Introduction.

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Lecture # 9

Lecture # 9. Chap 4: Ambiguous Grammar. Chomsky Hierarchy: Language Classification. A grammar G is said to be Regular if it is right linear where each production is of the form A ? w B or A ? w or left linear where each production is of the form A ? B w or A ? w

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Lecture 3

Lecture 3. Chapter 4 Regular Expressions. Important Terms. Regular Expressions Regular Languages Finite Representations. Recursive Definition of Regular expressions. Rule 1: Every letter of ? can be made into a regular expression by writing it in boldface; ^ is a regular expression.

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Inferring Finite Automata from queries and counter-examples

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Where the Soul Never Dies Revelation 21:4

Where the Soul Never Dies Revelation 21:4. Introductory Thoughts. A song which describes the blessings of heaven. The text and tune were composed both by William Matthew Golden.

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3.2 Pumping Lemma for Regular Languages

3.2 Pumping Lemma for Regular Languages .

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