src/FOL/IFOL.thy
1994-03-17 clasohm 1994-03-17 adapted type definition to new syntax
1993-10-25 wenzelm 1993-10-25 added white-space; made ~= a fake infix;
1993-10-07 lcp 1993-10-07 ifol.thy: added ~= for "not equals"
1993-09-16 clasohm 1993-09-16 Initial revision