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theorem proved term proof

reciprocal_involution

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formal statement (Lean)

 691theorem reciprocal_involution (x : ℝ) :
 692    reciprocalAuto (reciprocalAuto x) = x := by

proof body

Term-mode proof.

 693  unfold reciprocalAuto
 694  exact inv_inv x
 695
 696/-- **PROVED: The reciprocal map preserves J-cost.** -/

depends on (6)

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