06XX 


Order, lattices, ordered algebraic structures [See also 18B35] 

06Cxx 

Modular lattices, complemented lattices 


06C05 
Modular lattices, Desarguesian lattices 


06C10 
Semimodular lattices, geometric lattices 


06C15 
Complemented lattices, orthocomplemented lattices and posets [See also 03G12, 81P10] 


06C20 
Complemented modular lattices, continuous geometries 


06C99 
None of the above, but in this section 