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def definition def or abbrev

PhiClosed

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formal statement (Lean)

  52def PhiClosed (φ x : ℝ) : Prop := x ∈ phiSubfield φ

proof body

Definition body.

  53
  54namespace PhiClosed
  55
  56variable {φ x y : ℝ}
  57

used by (18)

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depends on (1)

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