06Bxx | 06A | 06 | 06C |
| 06B05 | Structure theory |
| 06B10 | Ideals, congruence relations |
| 06B15 | Representation theory |
| 06B20 | Varieties of lattices |
| 06B23 | Complete lattices, completions |
| 06B25 | Free lattices, projective lattices, word problems [See also 03D40, 08A50, 20F10] |
| 06B30 | Topological lattices, order topologies [See also 06F30, 22A26, 54F05, 54H12] |
| 06B35 | Continuous lattices and posets, applications [See also 06B30, 06D10, 06F30, 18B35, 22A26, 68Q55] |
| 06B99 | None of the above, but in this section |