cylindrical coordinates

Japanese: cylindrical coordinates(英語表記)cylindricalcoordinates
cylindrical coordinates

…The position of P can also be expressed by the pair ( r , θ, z ) of the length r of the line segment OQ and the values ​​of θ and z on it. These are called cylindrical coordinates (Figure 9).
[barycentric coordinates]
Given four points A0 , A1 , A2 , and A3 in a space that are not on the same plane, take one point O in the space and consider vectors. When there is a point P in the space, a set of real numbers ( λ0 , λ1 , λ2 , λ3 ) is determined, regardless of how O is taken.

*Some terminology explanations that mention "cylindrical coordinates" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…Pの位置はまた線分OQの長さrと上のθおよびzの組(r,θ,z)でも表される。これを円柱座標cylindrical coordinatesという(図9)。
[重心座標barycentric coordinates]
 空間内に同一平面上にない4点A0,A1,A2,A3が与えられたとき,空間内に1点Oをとり,ベクトルを考えれば,空間内に点Pがあるとき,となる実数の組(λ0123)が定まり,これはOのとり方によらない。…

※「cylindrical coordinates」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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