The Plasticity of Some Fittable Surfaces on a Given Quadruple of Points in the Three-Dimensional Euclidean Space

• Видавець: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
• Дата: 2014
• Автор: Zachos, A.N.
• Формат: Стаття
• Мова: English
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2014
• Назва видання: Журнал математической физики, анализа, геометрии
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/106810
• Цитувати: The Plasticity of Some Fittable Surfaces on a Given Quadruple of Points in the Three-Dimensional Euclidean Space / A.N. Zachos // Журнал математической физики, анализа, геометрии. — 2014. — Т. 10, № 4. — С. 485-495. — Бібліогр.: 13 назв. — англ.

We construct a two-dimensional sphere in the three-dimensional Euclidean space which intersects a circular cylinder in three given points and the corresponding weighted Fermat-Torricelli point for a geodesic triangle such that these three points and the corresponding weighted Fermat- Torricelli point remain the same on the sphere for a different triad of weights which correspond to the vertices on the surface of the sphere. We derive a circular cone which passes from the same points that a circular cylinder passes. By applying the inverse weighted Fermat-Torricelli problem for different weights, we obtain the plasticity equations which provide the new weights of the weighted Fermat-Torricelli point for fixed geodesic triangles on the surface of a fittable sphere and a fittable circular cone with respect to the given quadruple of points on a circular cylinder, which inherits the curvature of the corresponding fittable surfaces.