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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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Is back at work. Currently arranging a trip to frankfurt to visit airlines, airports and tour operators
AdamSmith1984 (Adam Smith) Mon, 04 Jan 2010 11:33:29 -0000
Is back at work. Currently arranging a trip to frankfurt to visit airlines, airports and tour operators
RT @click_in Travel Agents/Tour Operators/Car Rental/Courier http://j.mp/6WBWv6
sandeepchander (Sandeep K Chander) Mon, 04 Jan 2010 11:04:57 -0000
RT @click_in Travel Agents/Tour Operators/Car Rental/Courier http://j.mp/6WBWv6
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