Self-Inversive Cubic Curves

2016 ◽  
pp. 179-215 ◽  
Author(s):  
Raymond R. Fletcher
Keyword(s):  
Cubic Curves

scholarly journals Conversion Between Cubic Bezier Curves and Catmull–Rom Splines

2021 ◽  
Vol 2 (5) ◽  
Author(s):  
Soroosh Tayebi Arasteh ◽  
Adam Kalisz
Keyword(s):  
Computer Graphics ◽  
Geometric Design ◽  
The Other ◽  
Control Points ◽  
Complex Surfaces ◽  
Linear Transformations ◽  
Computer Aided Geometric Design ◽  
Cubic Curves ◽  
Original Curve ◽  
Computer Aided

AbstractSplines are one of the main methods of mathematically representing complicated shapes, which have become the primary technique in the fields of Computer Graphics (CG) and Computer-Aided Geometric Design (CAGD) for modeling complex surfaces. Among all, Bézier and Catmull–Rom splines are the most common in the sub-fields of engineering. In this paper, we focus on conversion between cubic Bézier and Catmull–Rom curve segments, rather than going through their properties. By deriving the conversion equations, we aim at converting the original set of the control points of either of the Catmull–Rom or Bézier cubic curves to a new set of control points, which corresponds to approximately the same shape as the original curve, when considered as the set of the control points of the other curve. Due to providing simple linear transformations of control points, the method is very simple, efficient, and easy to implement, which is further validated in this paper using some numerical and visual examples.

scholarly journals Cubic Curves Over the Finite Field of Order Twenty-Five

2021 ◽  
Vol 1818 (1) ◽  
pp. 012079
Author(s):  
S. H. Naji ◽  
E. B. Al-Zangana
Keyword(s):  
Finite Field ◽  
Cubic Curves

scholarly journals The proportion of plane cubic curves over ℚ that everywhere locally have a point

2016 ◽  
Vol 12 (04) ◽  
pp. 1077-1092 ◽  
Author(s):  
Manjul Bhargava ◽  
John Cremona ◽  
Tom Fisher
Keyword(s):  
Rational Function ◽  
Rational Point ◽  
Cubic Curves

We show that the proportion of plane cubic curves over [Formula: see text] that have a [Formula: see text]-rational point is a rational function in [Formula: see text], where the rational function is independent of [Formula: see text], and we determine this rational function explicitly. As a consequence, we obtain the density of plane cubic curves over [Formula: see text] that have points everywhere locally; numerically, this density is shown to be [Formula: see text].

Transformations depending on sets of associated points

1952 ◽  
Vol 48 (3) ◽  
pp. 383-391
Author(s):  
T. G. Room
Keyword(s):  
Projective Space ◽  
Projective Plane ◽  
Three Dimensional ◽  
Cubic Curves ◽  
Birational Transformations ◽  
Quadric Surfaces ◽  
Base Points ◽  
Dimensional Projective Space ◽  
Quartic Curves

This paper falls into three sections: (1) a system of birational transformations of the projective plane determined by plane cubic curves of a pencil (with nine associated base points), (2) some one-many transformations determined by the pencil, and (3) a system of birational transformations of three-dimensional projective space determined by the elliptic quartic curves through eight associated points (base of a net of quadric surfaces).

scholarly journals Cubic Arcs in the Projective Plane Over a Finite Field of Order Twenty Three

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Najm A.M. Al-Seraji ◽  
Asraa A. Monshed
Keyword(s):  
Finite Field ◽  
Projective Plane ◽  
Coding Theory ◽  
Finite Projective Plane ◽  
Cubic Curves ◽  
The Subject

In this research we are interested in finding all the different cubic curves over a finite projective plane of order twenty-three, learning which of them is complete or not, constructing the stabilizer groups of the cubics in, studying the properties of these groups, and, finally, introducing the relation between the subject of coding theory and the projective plane of order twenty three.

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