05E45 Combinatorial aspects of simplicial complexes

05E99 None of the above, but in this section

06-XX Order, lattices, ordered algebraic structures [See also <a href="#code:18B35">18B35</a>]

06-00 General reference works (handbooks, dictionaries, bibliographies, etc.)

06-01 Instructional exposition (textbooks, tutorial papers, etc.)

06-02 Research exposition (monographs, survey articles)

06-03 Historical (must also be assigned at least one classification number from Section 01)

06-04 Explicit machine computation and programs (not the theory of computation or programming)

06-06 Proceedings, conferences, collections, etc.

06A07 Combinatorics of partially ordered sets

06A12 Semilattices [See also <a href="#code:20M10">20M10</a>; for topological semilattices see <a href="#code:22A26">22A26</a>]

06A15 Galois correspondences, closure operators

06A99 None of the above, but in this section

06Bxx Lattices [See also <a href="#code:03G10">03G10</a>]

06B25 Free lattices, projective lattices, word problems [See also <a href="#code:03D40">03D40</a>, <a href="#code:08A50">08A50</a>, <a href="#code:20F10">20F10</a>]

06B30 Topological lattices, order topologies [See also <a href="#code:06F30">06F30</a>, <a href="#code:22A26">22A26</a>, <a href="#code:54F05">54F05</a>, <a href="#code:54H12">54H12</a>]

06B35 Continuous lattices and posets, applications [See also 06B30, <a href="#code:06D10">06D10</a>, <a href="#code:06F30">06F30</a>, <a href="#code:18B35">18B35</a>, <a href="#code:22A26">22A26</a>, <a href="#code:68Q55">68Q55</a>]

06B99 None of the above, but in this section

06Cxx Modular lattices, complemented lattices

06C05 Modular lattices, Desarguesian lattices

06C10 Semimodular lattices, geometric lattices

06C15 Complemented lattices, orthocomplemented lattices and posets [See also <a href="#code:03G12">03G12</a>, <a href="#code:81P10">81P10</a>]

06C20 Complemented modular lattices, continuous geometries

06C99 None of the above, but in this section

06D05 Structure and representation theory

06D20 Heyting algebras [See also <a href="#code:03G25">03G25</a>]