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theorem proved term proof

chartCompatible_symm

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formal statement (Lean)

 116theorem chartCompatible_symm (φ₁ φ₂ : RecognitionChart L r n)
 117    (hcompat : ChartCompatible L r φ₁ φ₂) :
 118    ChartCompatible L r φ₂ φ₁ := by

proof body

Term-mode proof.

 119  intro c h₂ h₁
 120  exact (hcompat c h₁ h₂).symm
 121
 122/-! ## Recognition Atlas -/
 123
 124/-- A recognition atlas is a family of compatible charts that cover the space -/

depends on (18)

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