06D22 Frames, locales {For topological questions see <a href="#code:54-XX">54-XX</a>}

06D25 Post algebras [See also <a href="#code:03G20">03G20</a>]

06D30 De Morgan algebras, \L ukasiewicz algebras [See also <a href="#code:03G20">03G20</a>]

06D72 Fuzzy lattices (soft algebras) and related topics

06D75 Other generalizations of distributive lattices

06D99 None of the above, but in this section

06Exx Boolean algebras (Boolean rings) [See also <a href="#code:03G05">03G05</a>]

06E10 Chain conditions, complete algebras

06E15 Stone spaces (Boolean spaces) and related structures

06E20 Ring-theoretic properties [See also <a href="#code:16E50">16E50</a>, <a href="#code:16G30">16G30</a>]

06E25 Boolean algebras with additional operations (diagonalizable algebras, etc.) [See also <a href="#code:03G25">03G25</a>, <a href="#code:03F45">03F45</a>]

06E30 Boolean functions [See also <a href="#code:94C10">94C10</a>]

06E75 Generalizations of Boolean algebras

06E99 None of the above, but in this section

06F05 Ordered semigroups and monoids [See also <a href="#code:20Mxx">20Mxx</a>]

06F15 Ordered groups [See also <a href="#code:20F60">20F60</a>]

06F20 Ordered abelian groups, Riesz groups, ordered linear spaces [See also <a href="#code:46A40">46A40</a>]

06F25 Ordered rings, algebras, modules {For ordered fields, see <a href="#code:12J15">12J15</a>; see also <a href="#code:13J25">13J25</a>, <a href="#code:16W80">16W80</a>}

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

06F35 BCK-algebras, BCI-algebras [See also <a href="#code:03G25">03G25</a>]

06F99 None of the above, but in this section

08-00 General reference works (handbooks, dictionaries, bibliographies, etc.)

08-01 Instructional exposition (textbooks, tutorial papers, etc.)

08-02 Research exposition (monographs, survey articles)

08-03 Historical (must also be assigned at least one classification number from Section 01)

08-04 Explicit machine computation and programs (not the theory of computation or programming)