going fully curry, everything now is unannotated
deal with parser, still need to fix some bugs
fixed the bug, now need to parse formula and proof
now just need to parse proof
finished parsing proofs. Now just need to take care of updating the operator table, then I am done with parser
now be able to deal with infix formula operator, still need to deal with program and set
dark art of hacking the special operator
delete the special operator.
decided to go back to special infix.
dealing with type inference
finished processing datatype definitions
ugh, type inference is tricky
handled set definitions
handled the well-defined symbol for set definition
deal with proof checking
finished proof checking
handle the parser to accept implicit inverse cmp,beta; fix term reduction; todo: cmp, subst, pprint
finished eval, comp and plumbing
fixes some bugs, now need to fix the bug in comprehension
found the bug in comp