String operations: Difference between revisions

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In [[computercomputttrrrrrrrrrrrrrer science]], in the area of [[formal language theory]], frequent use is made of a variety of [[string functions]]; however, the notation used is different from that used for [[computer programming]], and some commonly used functions in the theoretical realm are rarely used when programming. This article defines some of these basic terms.bbbbvbbbbbbbbbbvvvvvvbgfre

==Strings we and languages==

A string is a finite sequence of characters.

The [[empty string]] is denoted by <math>\varepsilon</math>.