Mathematical Sciences Classification System
52Bxx - Polytopes and polyhedra
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                            52B05Combinatorial properties (number of faces, shortest paths, etc.) [See also 05Cxx]
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                            52B10Three-dimensional polytopes
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                            52B11$n$-dimensional polytopes
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                            52B12Special polytopes (linear programming, centrally symmetric, etc.)
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                            52B15Symmetry properties of polytopes
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                            52B20
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                            52B22Shellability
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                            52B35Gale and other diagrams
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                            52B40
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                            52B45Dissections and valuations (Hilbert's third problem, etc.)
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                            52B55
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                            52B60Isoperimetric problems for polytopes
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                            52B70Polyhedral manifolds
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                            52B99None of the above, but in this section