51-XX |
|
|
Geometry {For algebraic geometry, see 14-XX; for differential geometry, see 53-XX} |
|
51Dxx |
|
Geometric closure systems |
|
|
51D05 |
Abstract (Maeda) geometries |
|
|
51D10 |
Abstract geometries with exchange axiom |
|
|
51D15 |
Abstract geometries with parallelism |
|
|
51D20 |
Combinatorial geometries and geometric closure systems [See also 05B25, 05B35] |
|
|
51D25 |
Lattices of subspaces and geometric closure systems [See also 05B35] |
|
|
51D30 |
Continuous geometries, geometric closure systems and related topics [See also 06Cxx] |
|
|
51D99 |
None of the above, but in this section |