Duality (projective geometry)
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What links here
Real projective plane
Cubic surface
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Riemann–Hurwitz formula
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Connected sum
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Charts on SO(3)
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Line at infinity
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Plane at infinity
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Hilbert's sixteenth problem
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Desargues's theorem
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List of algebraic geometry topics
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List of geometric topology topics
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Regular polyhedron
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Scalar curvature
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Projective geometry
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List of mathematical shapes
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Elliptic geometry
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Orientability
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Spherical geometry
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Riemann surface
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Euler characteristic
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Stereographic projection
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Torus
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Genus (mathematics)
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Boy's surface
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Roman surface
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Non-Euclidean geometry
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Algebraic topology
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Möbius strip
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Hex (board game)
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Topology
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Sphere
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Surface (topology)
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4-polytope
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Projective plane
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Polyhedron
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Icosidodecahedron
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Four color theorem
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