Results 11 to 20 of about 686,345 (230)

Direct Linear Interpolation of Geometric Objects in Conformal Geometric Algebra [PDF]

open access: yesAdvances in Applied Clifford Algebras, 2019
Typically we do not add objects in conformal geometric algebra (CGA), rather we apply operations that preserve grade, usually via rotors, such as rotation, translation, dilation, or via reflection and inversion. However, here we show that direct linear interpolation of conformal geometric objects can be both intuitive and of practical use. We present a
Hadfield, H., Lasenby, J.
openaire   +9 more sources

A pentagonal surface patch for computer-aided geometric design [PDF]

open access: yes, 1981
A vector valued interpolation scheme for a pentagon is described which is compatible with surface patches which have a rectangular domain of definition. Such a scheme could be useful in computer- aided geometric design problems, where a pentagonal patch ...
Gregory, JA, Charrot, P
core   +6 more sources

Interpolation in singular geometric theories

open access: yes, 2019
We present a generalization of Maehara's lemma to show that the extensions of classical and intuitionistic first-order logic with a special type of geometric axioms, called singular geometric axioms, have Craig's interpolation property. As a corollary, we obtain a direct proof of interpolation for (classical and intuitionistic) first-order logic with ...
Guido Gherardi   +2 more
openaire   +3 more sources

MULTIVARIATE INTERPOLATION USING POLYHARMONIC SPLINES

open access: yesActa Polytechnica, 2021
Data measuring and further processing is the fundamental activity in all branches of science and technology. Data interpolation has been an important part of computational mathematics for a long time. In the paper, we are concerned with the interpolation
Karel Segeth
doaj   +1 more source

Implementation of the geometrical problem in CNC metal cutting machine [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2017
The article deals with the tasks of managing the production process (technological process and technological equip-ment), the most detailed analysis of the implementation of the geometric problem in CNC machines.
Erokhin V.V.
doaj   +1 more source

Shape preserving piecewise rational interpolation [PDF]

open access: yes, 1983
An explicit representation of a C1 piecewise rational cubic function is developed which can be used to solve the problem of shape preserving interpolation.
Gregory, JA, Delbourgo, R
core   +4 more sources

Combined SGC-Ball Interpolation Curves: Construction and IGEO-Based Shape Optimization

open access: yesMathematics, 2023
With the swift advancement of the geometric modeling industry and computer technology, traditional generalized Ball curves and surfaces are challenging to achieve the geometric modeling of various complex curves and surfaces.
Jiaoyue Zheng   +3 more
doaj   +1 more source

Area-preserving geometric Hermite interpolation [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2019
In this paper we establish a framework for planar geometric interpolation with exact area preservation using cubic Bézier polynomials. We show there exists a family of such curves which are $5^{th}$ order accurate, one order higher than standard geometric cubic Hermite interpolation.
Geoffrey McGregor, Jean-Christophe Nave
openaire   +4 more sources

Empirical mode decomposition with shape-preserving spline interpolation

open access: yesResults in Applied Mathematics, 2020
Empirical mode decomposition (EMD) is a popular, novel, user-friendly algorithm to decompose a given signal into its constituting components, utilizing spline interpolation.
Maria D. van der Walt
doaj   +1 more source

On planar polynomial geometric interpolation

open access: yesJournal of Approximation Theory, 2022
In the paper, the planar polynomial geometric interpolation of data points is revisited. Simple sufficient geometric conditions that imply the existence of the interpolant are derived in general. They require data points to be convex in a certain discrete sense.
openaire   +4 more sources

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