Mathematical Sciences Classification System
51Axx - Linear incidence geometry
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51A05General theory and projective geometries
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51A10Homomorphism, automorphism and dualities
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51A15Structures with parallelism
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51A20Configuration theorems
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51A25
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51A30Desarguesian and Pappian geometries
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51A35Non-Desarguesian affine and projective planes
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51A40Translation planes and spreads
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51A45Incidence structures imbeddable into projective geometries
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51A50Polar geometry, symplectic spaces, orthogonal spaces
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51A99None of the above, but in this section