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## continuation

continuation
1. A concept in programming language semantics, allowing the meaning of program constructs to be defined in terms of the effect they have on the computation remaining to be done, rather than on the current state of the computation. This is particularly useful in giving the semantics of constructs that effect the flow of control, such as GOTOs and loop exits.

2. An approach to solving a mathematical problem that involves solving a sequence of problems with different parameters; the parameters are selected so that ultimately the original problem is solved. An underlying assumption is that the solution depends continuously on the parameter. This approach is used for example on difficult problems in nonlinear equations and differential equations. For example, to solve the nonlinear equations F(x) = 0,

let x(0) be a first approximation to the solution. Let α be a parameter 0≥α≥1, then define the equations (x,α) = F(x) + (α–1)F(x(0)) = 0

For α = 0, x(0) is a solution;

for α = 1, (x,1) = F(x) = 0,

which are the original equations. Hence by solving the sequence of problems with α given by 0 = α0 < α1 < … < αN = 1

the original problem is solved. As the calculation proceeds each solution can be used as a starting approximation in an iterative method for solving the next problem.

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## continuation

con·tin·u·a·tion / kənˌtinyəˈwāshən/ • n. [usu. in sing.] the action of carrying something on over a period of time or the process of being carried on. ∎  the state of remaining in a particular position or condition. ∎  a part that is attached to and an extension of something else: once a separate village, it is now a continuation of the suburbs.

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"continuation." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"continuation." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/continuation

"continuation." The Oxford Pocket Dictionary of Current English. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/continuation

## continuation

continuation The use of one set of measurements of a potential field (usually gravity or magnetic) over one surface to determine the set of values the field would have over another surface, usually at a different elevation. See also UPWARD CONTINUATION; and DOWNWARD CONTINUATION.

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"continuation." A Dictionary of Earth Sciences. . Encyclopedia.com. 23 Jul. 2017 <http://www.encyclopedia.com>.

"continuation." A Dictionary of Earth Sciences. . Encyclopedia.com. (July 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/continuation

"continuation." A Dictionary of Earth Sciences. . Retrieved July 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/continuation