Calc
FreshVar()
FreshVars()
Inductive()
Lemma()
NewType()
PTheorem()
Proof
QExists()
QForAll()
QImplies()
Struct()
Theorem()
axiom()
cond()
define()
prove()
search()
simp()
Add
Mul
abstract_arith()
rlemma()
sin_lower()
sqrt_bnd()
sqrt_lower()
sqrt_upper()
Functions
is_zero(x)
is_zero