Apollonius Problem and Caustics of an Ellipsoid

Fuente: arXiv
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Main Author: Aliyev, Yagub N.
Format: Preprint
Published: 2023
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author Aliyev, Yagub N.
author_facet Aliyev, Yagub N.
contents In the paper we discuss Apollonius Problem on the number of normals of an ellipse passing through a given point. It is known that the number is dependent on the position of the given point with respect to a certain astroida. The intersection points of the astroida and the ellipse are used to study the case when the given point is on the ellipse. The problem is then generalized for 3-dimensional space, namely for Ellipsoids. The number of concurrent normals in this case is known to be dependent on the position of the given point with respect to caustics of the ellipsoid. If the given point is on the ellipsoid then the number of normals is dependent on position of the point with respect to the intersections of the ellipsoid with its caustics. The main motivation of this paper is to find parametrizations and classify all possible cases of these intersections.
format Preprint
id arxiv_https___arxiv_org_abs_2305_06065
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Apollonius Problem and Caustics of an Ellipsoid
Aliyev, Yagub N.
History and Overview
Differential Geometry
53A05, 53A04
In the paper we discuss Apollonius Problem on the number of normals of an ellipse passing through a given point. It is known that the number is dependent on the position of the given point with respect to a certain astroida. The intersection points of the astroida and the ellipse are used to study the case when the given point is on the ellipse. The problem is then generalized for 3-dimensional space, namely for Ellipsoids. The number of concurrent normals in this case is known to be dependent on the position of the given point with respect to caustics of the ellipsoid. If the given point is on the ellipsoid then the number of normals is dependent on position of the point with respect to the intersections of the ellipsoid with its caustics. The main motivation of this paper is to find parametrizations and classify all possible cases of these intersections.
title Apollonius Problem and Caustics of an Ellipsoid
topic History and Overview
Differential Geometry
53A05, 53A04
url https://arxiv.org/abs/2305.06065