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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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Tour Operators :: Travel Services
Travel Tips | Kenya Tanzania Uganda Tour operators & Travel Agents ...: Selecting a tour agent or safari operator i... http://bit.ly/4yM5K7
Beag2009 (Beatriz G Gomez) Fri, 01 Jan 2010 14:06:21 -0000
Travel Tips | Kenya Tanzania Uganda Tour operators & Travel Agents ...: Selecting a tour agent or safari operator i... http://bit.ly/4yM5K7
Tour Operators - Tour & Travel Planner http://bit.ly/8Tp9j6
jamesmt39 (James MT) Fri, 01 Jan 2010 13:45:12 -0000
Tour Operators - Tour & Travel Planner http://bit.ly/8Tp9j6
Plan a New Year's Bash at Luxury Beach Resorts With Online Tour Operators - http://is.gd/5ILEc
travelhut (Travel Hut) Fri, 01 Jan 2010 13:34:04 -0000
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California Parlor Car Tours - Lists the various California tours available, sights, lodging, meals and prices.
California Tour Consultants, Inc. - Destination management company in California that provides customized inbound services for groups.
Coast Tours - Scenic tours of California. Tours include Big Sur, Pismo Beach, Heast Castle and Napa Valley.
Meta Description: [ Explore the Central Coast of California with Coast Tours. From Pismo Beach to Big Sur... Come see the rugged beauty of the Central Coast of California. As the Central Coast's Premier Tour Guide, Bob Miles knows when and where to tour for GREAT FUN! ]
Foxfire Stage Line - Complete charter/tour bus service for the western USA, Canada and Mexico. Also listings for other bus companies and agents throughout the US.
Meta Description: [ #1 Charter Bus Referral Service ]
Key Holidays - Take the train to Reno, Yosemite, Hearst Castle, Monterey, Disneyland. Train and Hotel Packages.
Meta Description: [ Specializing in the Amtrak tour packages to Reno, Hearst Castle, Yosemite, Monterey, San Francisco and the Pacific Northwest, and The Reno Fun Train and Reno Snow Train. ]
Napa Valley Bike Tours - Bicycle tours with wine tastings and picnics in Napa and Sonoma Counties, California. Or rent a bike and explore on your own.
Meta Description: [ Napa Valley Bike Tours offers bicycle getaway vacations, one-day tours and adventures, and rentals in Napa and Sonoma Valley - the heart of the California wine country. ]
Overland Trail Railway Car - Offers private charters of 1949 club-lounge rail car. History, photos, and schedules.
Quintessential California - Designs custom California tour itineraries for travelers who want a personalized experience.
Special Events Services - Full destination services since 1981.
Meta Description: [ A full service travel package tour company servicing Southern California and the Southwest - Rose Parade, Rose Bowl Game, Catalina Island, convention services, destination management, meeting planner, ground transportation, Grand Canyon. ]
Storer Coachways - Charter bus service, state and national tours, and scheduled gambling trips from the Central Valley to Reno and Tahoe. Site also includes company history.
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Sun Land Tours LLC - Daily sightseeing tours, charters of top Southern California attractions from Disneyland, beaches and San Diego.
Meta Description: [ Sun Land Tours--serving the Orange County and Anaheim California area ]
Valley Wine Tours - Offers several tours to enable you to experience California wine country.
Meta Description: [ wine tours, wine tasting, napa valley, wineries, vineyard, napa valley wineries, sonoma county, sonoma valley, sonoma valley wineries, napa valley wine tours, vinyards, california wine tours ]
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