Calc
FreshVar()
FreshVars()
Inductive()
Lemma()
NewType()
PTheorem()
Proof
QExists()
QForAll()
QImplies()
Struct()
Theorem()
axiom()
cond()
define()
prove()
search()
simp()
Quote()
Truth()
Unquote()
of_sexp()
parse()
>>> of_sexp(['a', ['b', 'c']]) List(Concat(Unit(Atom("a")), Unit(List(Concat(Unit(Atom("b")), Unit(Atom("c")))))))
sexp (Sexp)
ExprRef