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…pointwise) With x as a theorem argument the representation could depend on x (trishullab#368).
Removes ¬closure {g} = ⊤ ∧ ¬closure {h} = ⊤ from ghgen (trishullab#368).
f : ℂ → ℂ and complex roots; rationality as ∃ q : ℚ (trishullab#368).
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Fixes #368.
xafter the witnesses (avals N a ∧ ∀ x : Fin n → ℝ, …) so the representation is an identity, not pointwise.ghgen : Subgroup.closure {g, h} = ⊤(drops the extra¬closure {g} = ⊤ ∧ ¬closure {h} = ⊤).f : ℂ → ℂ, roots inℂ, rationality as∃ q : ℚ, r1 + r2 = q/∃ q : ℚ, r1 * r2 = q.All three statements elaborate on Lean v4.35.0 + current Mathlib.