projective plane

English

Noun

projective plane (plural projective planes)

(geometry) A plane in which any pair of distinct points determine a line and any pair of distinct lines intersect at a point.
- 2004, David S. Dummit & Richard M. Foote, chapter 6, in Abstract Algebra‎, →ISBN, page 210:
  
  Generally, a projective plane of "order" N has $N^{2}+N+1$ points, and the same number of lines.

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