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An Unconditionally Monotone <i>C</i><sup>2</sup>Quartic Spline Method with Nonoscillation Derivatives

An Unconditionally Monotone <i>C</i><sup>2</sup>Quartic Spline Method with Nonoscillation Derivatives
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摘要 A one-dimensional monotone interpolation method based on interface reconstruction with partial volumes in the slope-space utilizing the Hermite cubic-spline, is proposed. The new method is only quartic, however is C2 and unconditionally monotone. A set of control points is employed to constrain the curvature of the interpolation function and to eliminate possible nonphysical oscillations in the slope space. An extension of this method in two-dimensions is also discussed. A one-dimensional monotone interpolation method based on interface reconstruction with partial volumes in the slope-space utilizing the Hermite cubic-spline, is proposed. The new method is only quartic, however is C2 and unconditionally monotone. A set of control points is employed to constrain the curvature of the interpolation function and to eliminate possible nonphysical oscillations in the slope space. An extension of this method in two-dimensions is also discussed.
出处 《Advances in Pure Mathematics》 2018年第1期25-40,共16页 理论数学进展(英文)
关键词 MONOTONE Interpolation QUARTIC NON-OSCILLATION Derivative Interface Reconstruction Slope Space HERMIT Spline Monotone Interpolation Quartic Non-Oscillation Derivative Interface Reconstruction Slope Space Hermit Spline
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