Calc
Inductive()
Lemma
NewType()
Proof
QExists()
QForAll()
Struct()
axiom()
cond()
define()
prove()
search()
simp()
abstract_arith()
rlemma()
sin_lower()
sqrt_bnd()
sqrt_lower()
sqrt_upper()
>>> arb_le_ax(3.14, real.pi) |- 157/50 <= pi >>> arb_le_ax(1,1) |- 1 <= 1
lhs0 (ArithRef)
rhs (ArithRef)