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Mathematical Sciences Classification System

51Exx - Finite geometry and special incidence structures

• 51E05
  General block designs [See also 05B05]
• 1
  51E10
  Steiner systems
• 10
  51E12
  Generalized quadrangles, generalized polygons
• 1
  51E14
  Finite partial geometries (general), nets, partial spreads
• 2
  51E15
  Affine and projective planes
• 4
  51E20
  Combinatorial structures in finite projective spaces [See also 05Bxx]
• 1
  51E21
  Blocking sets, ovals, $k$-arcs
• 51E22
  Linear codes and caps in Galois spaces [See also 94B05]
• 51E23
  Spreads and packing problems
• 9
  51E24
  Buildings and the geometry of diagrams
• 51E25
  Other finite nonlinear geometries
• 51E26
  Other finite linear geometries
• 51E30
  Other finite incidence structures [See also 05B30]
• 51E99
  None of the above, but in this section