In mathematics, an operator is a function, usually of a special kind depending on the topic. For instance, in linear algebra an "operator" is a linear operator. In analysis an "operator" may be a differential operator, generalizing the ordinary derivative, or an integral operator, generalizing ordinary integration. Often, an "operator" is a function that acts on functions to produce other functions; or it may be a generalization of such a function, as in linear algebra, where some of the terminology reflects the origin of the subject in operations on the functions that are solutions of differential equations. One often thinks of an operator as dynamic, changing something into something else, whence the name; but this is only a way of thinking and not a formal definition.

An operator name or operator symbol is a notation that denotes a particular operator. When there is no danger of confusion, an operator name or operator symbol may be referred to more briefly as an "operator". Strictly speaking, however, the operator is a mathematical object and not the syntactic entity that denotes it. The reason for identifying it with its notation is that there are some operators that have come to have standard notations.

An example of an operator, specifically a differential operator, is the derivative itself. The corresponding operator name D, when placed before a differentiable function f, indicates that the function is to be differentiated with respect to the variable.

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This is a colourful country, gay tour operators, the tourist industry & media should portray it that way. We not all from the suburbs u knw
genie_ology (Roger) Mon, 21 Dec 2009 12:49:40 -0000
This is a colourful country, gay tour operators, the tourist industry & media should portray it that way. We not all from the suburbs u knw
RT @HeadlinesIndia: Archaeological Survey of #India and the Indian Association of Tour Operators sign an agreement to maintain monuments ...
sojovarughese (Sojo Varughese) Mon, 21 Dec 2009 11:05:28 -0000
RT @HeadlinesIndia: Archaeological Survey of #India and the Indian Association of Tour Operators sign an agreement to maintain monuments ...
@HeadlinesIndia Archaeological Survey of #India and the Indian Association of Tour Operators sign an agreement to maintain monuments. #news
Samsoniteindia (Samsonite India) Mon, 21 Dec 2009 10:54:51 -0000
@HeadlinesIndia Archaeological Survey of #India and the Indian Association of Tour Operators sign an agreement to maintain monuments. #news
@haikalis ... οι tour operators κάνουν αποκλειστικά παιχνίδι και κάθε προσπάθεια για εναλλακτικά κανάλια διανομής είναι πολύ μεγάλο ρίσκο.
doxaras (doxaras) Mon, 21 Dec 2009 10:50:05 -0000
@haikalis ... οι tour operators κάνουν αποκλειστικά παιχνίδι και κάθε προσπάθεια για εναλλακτικά κανάλια διανομής είναι πολύ μεγάλο ρίσκο.
@HeadlinesIndia ASI & Tour operators are both stake holders, this PPP is a welcome step in protecting monuments in India, Gud news.
airplanetalk (Anup Murthy) Mon, 21 Dec 2009 10:42:06 -0000
@HeadlinesIndia ASI & Tour operators are both stake holders, this PPP is a welcome step in protecting monuments in India, Gud news.
RT @HeadlinesIndia: Archaeological Survey of #India and the Indian Association of Tour Operators sign an agreement to maintain monuments ...
Svara (Swapna Raghu Sanand) Mon, 21 Dec 2009 10:42:03 -0000
RT @HeadlinesIndia: Archaeological Survey of #India and the Indian Association of Tour Operators sign an agreement to maintain monuments ...

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