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Quintic hermite fractal interpolation in a strip: Preserving copositivity
, Saurabh K. Katiyar
Published in Springer New York LLC
2015
Volume: 143
   
Pages: 463 - 475
Abstract
The notion of fractal interpolation provides a general framework which includes traditional nonrecursive splines as special cases. In this paper, we describe a procedure for the construction of quintic Hermite FIFs as α-fractal function corresponding to the classical quintic Hermite interpolant. In contrast to traditional piecewise nonrecursive quintic Hermite interpolant, its fractal version has a second derivative which is differentiable in a finite or dense subset of the interpolation interval. This scheme offers an additional freedom over the classical quintic Hermite interpolants due to the presence of scaling factors. The elements of the iterated function system are identified so that the class of α-fractal function fα reflects the fundamental shape properties such as positivity, monotonicity, and convexity in addition to the regularity of f in the given interval. Using this general theory, an algorithm for positivity of quintic Hermite FIF is presented. Finally, the algorithm for a quintic Hermite fractal interpolants copositive with a given data set is prescribed. © Springer India 2015.
About the journal
JournalData powered by TypesetSpringer Proceedings in Mathematics and Statistics
PublisherData powered by TypesetSpringer New York LLC
ISSN21941009
Open AccessNo
Concepts (11)
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    Constraint theory
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    Interpolation
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    FRACTAL FUNCTIONS
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    FRACTAL INTERPOLATION
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    HERMITE
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    HERMITE INTERPOLANT
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    ITERATED FUNCTION SYSTEM
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    Positivity
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    SCALING FACTORS
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    SECOND DERIVATIVES
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    Fractals