projective plane
ko · counterpart 사영평면
The affine plane plus one extra "point at infinity" for every direction — so parallel lines, which share a direction, meet at the same one of those points. With this addition, any two distinct lines meet at exactly one point. Real version: ℝℙ². Complex version: ℂℙ². Bezout's theorem works in ℂℙ², not ℝ².
related
used on · 2