Émile Borel
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Hyperbolic geometry
1870 in science
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List of differential geometry topics
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Marilyn vos Savant
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List of Lie groups topics
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Dehn invariant
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Modular group
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Tessellation
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Hyperbolic space
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Möbius transformation
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Arthur Cayley
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Light cone
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Gudermannian function
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Anti-de Sitter space
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List of things named after Carl Friedrich Gauss
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Coxeter group
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Inversive geometry
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Orbifold
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Upper half-plane
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Sectional curvature
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Gaussian curvature
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Omega (navigation system)
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Synthetic geometry
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Algebraic curve
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Euclid's Elements
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Projective geometry
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Erlangen program
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Elliptic geometry
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Minkowski space
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Wallace–Bolyai–Gerwien theorem
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Geometrization conjecture
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Harold Scott MacDonald Coxeter
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Trapezoid
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Squaring the circle
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Heron's formula
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Ultimate fate of the universe
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Unifying theories in mathematics
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Metamathematics
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List of unsolved problems in mathematics
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Spherical geometry
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Foundations of mathematics
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List of geometers
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Knot theory
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Hilbert's third problem
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Ceva's theorem
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Riemannian manifold
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Stereographic projection
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Gauss–Bonnet theorem
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Law of sines
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List of Russian people
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Lobachevsky geometry
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Lobachevskian or hyperbolic geometry
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Hyperbolic plane
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