英语词汇“parabolic point”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

parabolic point n. Geometry (originally) a point on a surface at which the indicatrix is a parabola, i.e. where a plane parallel to, and an infinitesimal distance from, the tangent plane at that point intersects the surface in a parabola; (now) a point on a surface at which the Gaussian curvature is zero.

ΚΠ

1866 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art II. 799/2 Parabolic point, a point on a surface at which the indicatrix is a parabola... The parabolic points..lie on a non-plane curve of the 4n(n−2)^th order. The tangent plane at a parabolic point is of the kind called stationary.

1948 Amer. Jrnl. Math. 70 333 (title) Differential geometry of a surface at a parabolic point.

1990 Proc. London Math. Soc. 60 412 (0, 0, 0) is not a parabolic point of M..however the boundary inflects the critical set.

单词	parabolic point
释义	> as lemmas parabolic point parabolic point n. Geometry (originally) a point on a surface at which the indicatrix is a parabola, i.e. where a plane parallel to, and an infinitesimal distance from, the tangent plane at that point intersects the surface in a parabola; (now) a point on a surface at which the Gaussian curvature is zero. ΚΠ 1866 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art II. 799/2 Parabolic point, a point on a surface at which the indicatrix is a parabola... The parabolic points..lie on a non-plane curve of the 4n(n−2)^th order. The tangent plane at a parabolic point is of the kind called stationary. 1948 Amer. Jrnl. Math. 70 333 (title) Differential geometry of a surface at a parabolic point. 1990 Proc. London Math. Soc. 60 412 (0, 0, 0) is not a parabolic point of M..however the boundary inflects the critical set. extracted from parabolicadj.n. < as lemmas
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