'Primitive regular expressions' presentation slideshows

Single Final State for NFAs

Single Final State for NFAs. Any NFA can be converted to an equivalent NFA with a single final state. Example. NFA. Equivalent NFA. In General. NFA. Equivalent NFA. Single final state. Add a final state Without transitions. Extreme Case. NFA without final state.

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Single Final State for NFA

Single Final State for NFA. Any NFA can be converted to an equivalent NFA with a single final state. Example. NFA. Equivalent NFA. In General. NFA. Equivalent NFA. Single final state. Add a final state Without transitions. Extreme Case. NFA without final state.

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Single Final State for NFAs and DFAs

Single Final State for NFAs and DFAs. Observation. Any Finite Automaton (NFA or DFA) can be converted to an equivalent NFA with a single final state. Equivalent NFA. Example. NFA. Equivalent NFA. Single final state. In General. NFA. Add a final state Without transitions.

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Regular Expressions

Regular Expressions. Regular Expressions. Regular expressions describe regular languages Example: describes the language. Given regular expressions and. Are regular expressions. Recursive Definition. Primitive regular expressions:. Not a regular expression:.

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Regular Expressions

Regular Expressions. Regular Expressions. Regular expressions describe regular languages Example: describes the language. Given regular expressions and. Are regular expressions. Recursive Definition. Primitive regular expressions:. Not a regular expression:.

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Regular Expressions

Regular Expressions. Regular Expressions. Regular expressions describe regular languages Example: describes the language. Given regular expressions and. Are regular expressions. Recursive Definition. Primitive regular expressions:. Not a regular expression:.

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Regular Expressions

Regular Expressions. Regular Expressions. Regular expressions describe regular languages Example: describes the language. Given regular expressions and. Are regular expressions. Recursive Definition. Primitive regular expressions:. Not a regular expression:.

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Regular Expressions

Regular Expressions. Regular Expressions. Regular expressions describe regular languages Example: describes the language. Given regular expressions and. Are regular expressions. Recursive Definition. Primitive regular expressions:. Not a regular expression:.

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Language Recognition (12.4) Longin Jan Latecki Temple University

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Language Recognition (12.4) Longin Jan Latecki Temple University

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Language Recognition (12.4) Longin Jan Latecki Temple University

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CSC312 Automata Theory Lecture # 3 Languages-II

CSC312 Automata Theory Lecture # 3 Languages-II. Formal Language. A formal language is a set of words—that is, strings of symbols drawn from a common alphabet.

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CSC312 Automata Theory Lecture # 3 Languages-II

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Definition of re

Definition of re. Let Sigma be a given alphabet. Then. 1 . ? , ? , and a ? ? are all regular expressions. These are called primal regular expressions . 2 . If r 1 and r 2 are regular expressions, so are r 1 + r 2 , r 1 . r 2 , r 1 *, and (r 1 ).

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