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Hilbert's fourth problem
Sign in to saveone of twenty-three, asking to construct all metric spaces where lines resemble those on a sphere
Connections
American Mathematical Society
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mathematics
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geometry
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International Standard Book Number
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David Hilbert
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axiom
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digital object identifier
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Euclidean geometry
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Hermann Minkowski
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non-Euclidean geometry
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Q118398
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congruence
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if and only if
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Gérard Desargues
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Minkowski spacetime
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hyperbolic geometry
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Hilbert's problems
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convex set
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triangle inequality theorem
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Élie Cartan
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