stereographic projection
Relating to, or characterized by, catelectrotonus.
plural of gemmation
(projective geometry, complex analysis, cartography) A function that maps a sphere onto a plane; especially, the map generated by projecting each point of the sphere from the sphere's (designated) north pole to a point on the plane tangent to the south pole.
(sports) Initialism of quarter time. / (medicine) A QT interval.
複素解析では、球面を平面に写す写像がリーマン球面上の点を複素平面へ対応させ、球面上の円を平面上の円や直線に変換します。
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