Curvature circle - curvature circle
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〘noun〙 A circle that shows the degree of curvature of a curve. Take points Q and R on a curve that are close to point P on the curve, and consider the circle determined by the three points P, Q, and R. When both Q and R are brought close to P on the curve, the circle that this circle approaches is called the curvature circle at P. [English-Japanese Dictionary of Mathematical Dictionary (1889)] Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
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〘名〙 曲線の曲がりの度合を表わす円。曲線上の点Ｐに近い曲線上の点Ｑ、Ｒをとり、三点Ｐ、Ｑ、Ｒによって定まる円を考える。Ｑ、Ｒをこの曲線上で共にＰに近づけたとき、この円が近づいて行く円をＰにおける曲率円という。〔数学ニ用ヰル辞ノ英和対訳字書（1889）〕
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