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・ Alphapharm
・ Alphaphonetic pronunciation
・ AlphaPoint
・ Alphaproteobacteria
・ Alphard
・ Alphard (programming language)
・ Alphard Island
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・ Alphabeat
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・ Alphabeat (disambiguation)
・ Alphabeat discography
・ Alphabet
・ Alphabet (book)
・ Alphabet (disambiguation)
Alphabet (formal languages)
・ Alphabet (song)
・ Alphabet agencies
・ Alphabet book
・ Alphabet Castle
・ Alphabet City (album)
・ Alphabet City (disambiguation)
・ Alphabet City (film)
・ Alphabet City, Manhattan
・ Alphabet effect
・ Alphabet Energy
・ Alphabet Fleet
・ Alphabet für Liège
・ Alphabet Game
・ Alphabet Inc.


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Alphabet (formal languages) : ウィキペディア英語版
Alphabet (formal languages)
In formal language theory, a non-empty set is called alphabet when its intended use in string operations shall be indicated. Its members are then commonly called ''symbols'' or ''letters'', e.g. characters or digits.〔〔 For example, a common alphabet is , the binary alphabet. A finite string is a finite sequence of letters from an alphabet; for instance a binary string is a string drawn from the alphabet . An infinite sequence of letters may be constructed from elements of an alphabet as well.
Given an alphabet \Sigma, we write \Sigma^
* to denote the set of all finite strings over the alphabet \Sigma. Here, the .
==See also==

*Combinatorics on words

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Alphabet (formal languages)」の詳細全文を読む



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