set intersection and union now named inter and union; closer connection between set and lattice operations; factored out complete lattice
header {* Main HOL *}
theory Main
imports Plain Quickcheck Map Recdef SAT
begin
text {*
Classical Higher-order Logic -- only ``Main'', excluding real and
complex numbers etc.
*}
text {* See further \cite{Nipkow-et-al:2002:tutorial} *}
end