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()
Sum a z3 expression. >>> x,n = smt.Reals(āx nā) >>> summation(x**2, (x, 0, 10)) 385 >>> summation(x, (x, 0, n)) n**2*1/2 + n*1/2