Projective Plane
A projective plane consists of a set of lines, a set of points, and a relation between points and lines called incidence, having the following properties:
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Famous quotes containing the word plane:
“As for the dispute about solitude and society, any comparison is impertinent. It is an idling down on the plane at the base of a mountain, instead of climbing steadily to its top.”
—Henry David Thoreau (1817–1862)