51Nxx | 51M | 51 | 52 |
| 51N05 | Descriptive geometry [See also 65D17, 68U07] |
| 51N10 | Affine analytic geometry |
| 51N15 | Projective analytic geometry |
| 51N20 | Euclidean analytic geometry |
| 51N25 | Analytic geometry with other transformation groups |
| 51N30 | Geometry of classical groups [See also 20Gxx, 14L35] |
| 51N35 | Questions of classical algebraic geometry [See also 14Nxx] |
| 51N99 | None of the above, but in this section |