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Related to Almost equal to: approximation


A result that is not exact but is near enough to the correct result for some specified purpose.
A procedure for obtaining such a result.



replacement of certain mathematical objects by others which are in one sense or another close to the initial objects. Approximation makes it possible to study the numerical characteristics and qualitative properties of the object, reducing the problem to a study of simpler or more convenient objects—for example, objects whose characteristics are easily computed or whose properties are already known. The theory of numbers studies Diophantine approximations—in particular, approximations of irrational numbers by rational numbers. Approximations of curves, surfaces, spaces, and mappings are investigated in geometry and topology. Some branches of mathematics are wholly devoted to approximations, as, for example, the approximation and interpolation of functions and numerical methods of analysis. The role of approximation in mathematics is continually growing. Presently, approximation can be viewed as one of the basic concepts of mathematics.


References in periodicals archive ?
She cited the example of the Whitney Museum, saying that it received a grant last year, $400,000, almost equal to the Arkansas Arts Council's $410,000 grant.
Thus, total property taxes of 37% were almost equal to the 38% paid in income taxes.
DeVoe found that people who are used to being paid by the hour start thinking of time as a commodity almost equal to cash.
And the $900 million needed for a three-mile leg between Koreatown and Fairfax is almost equal to the cost of the entire 14-mile Gold Line train to Pasadena.
The SICcast(R) system contains a dense silicon carbide polymer matrix that is chemically inert," Reddick explained, " It is extraordinarily abrasion resistant with a hardness rating almost equal to diamond.
5 million, almost equal to the earnings of Sampras, who leads the tour with $1,905,000 in earnings this year.
4 billion worth of project work will commence during 2006, which is almost equal to 2005's final total of $2.