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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 ?
Inferior volsella approximatively triangular, curved apically, covered with microtrichiae and about 30-40 weak setae.
410 is determined to be the value for which the estimated log-normal distribution and the estimated exponential distribution are approximatively at equal distance from the mixture d(p) according to Renyi's divergence.
Moreover, as it has been proved in Markowitz and Levy (1979), the mean-variance approach is approximatively robust even when the assumptions (1) and (2) are not verified.
The field site was located in a secondary forest located within the APA, in the municipality of Pacoti (4[grados]15' S; 38[grados]55' W), at an altitude of approximatively 850 m.
According to Kerlinger (1986), a representative sample has approximatively the same characteristics that the population relevant to the research question.
Laros (35) enlarged the drill channel around the screw head with a curette and injected approximatively 15 cc of PPMA before inserting the screw (however he did not include any results in his report).
Cave III shows a more limited age distribution, featuring only subadult and prime-aged animals up to approximatively nine years of age, and underrepresenting older adults.
However, whilst the number of actinomycetes was approximatively the same in the 2 soils (30.
The total time to complete this experiment was approximatively 15 minutes.
Based on Menta's eFPGA Core[TM] programmable logic architecture and on CEA-LETI and CROCUS magnetic technology, this first member of a family of MRAM-based FPGAs,is manufactured in CMOS 130 nm with magnetic junction in 120 nm and provides capacity of 1,444 LUT4, equivalent to approximatively 20K logic gates.
The sub-portfolio of loans to income producing real estate companies (IPRE pool) represents approximatively 40% of the total portfolio and the remainder of the portfolio is composed of loans granted to SMEs in different industries (BDCS pool).
The assignment will start approximatively second week October 2017.