Klein quadric
(mathematics) The lines of a 3-dimensional projective space, S, can be viewed as points of a 5-dimensional projective space, T. In that 5-space, the points that represent each line in S lie on a hyperbolic quadric, Q, known as the Klein quadric.
plural of car seat
present participle of job
(medicine) A chronic suppurative inflammatory disease of the apocrine sweat glands.
射影三次元空間の直線と五次元射影空間の点との対応を研究する際、これらの包含関係を理解するために、直線を表すその五次元空間内の双曲二次曲面をよく調べる。
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