English
The equality expressing that a generic monic polynomial has a root is equivalent to the existential property of evaluation of the monic polynomial, under the relabeled term, in the field theory.
Русский
Равенство, выражающее наличие корня у общего монического многочлена, эквивалентно существующему свойству оценки монического полинома в поле.
LaTeX
$$genericMonicPolyHasRoot(n) = ((termOfFreeCommRing (genericMonicPoly n)).relabel Sum.inr = 0).ex.alls eq_1$$
Lean4
/-- A sentence saying every monic polynomial of degree `n` has a root. -/
noncomputable def genericMonicPolyHasRoot (n : ℕ) : Language.ring.Sentence :=
(∃'((termOfFreeCommRing (genericMonicPoly n)).relabel Sum.inr =' 0)).alls