Calc
FreshVar()
FreshVars()
Inductive()
Lemma()
NewType()
PTheorem()
Proof
QExists()
QForAll()
QImplies()
Struct()
Theorem()
axiom()
cond()
define()
prove()
search()
simp()
>>> x = Int("x") >>> is_T(x) True >>> is_T(TLift(1)) True >>> is_T(smt.BoolVal(True)) False
x (ExprRef)
bool