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theorem proved term proof

fcc_hcp_same_packing

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formal statement (Lean)

  78theorem fcc_hcp_same_packing : packingEfficiencyApprox .FCC = packingEfficiencyApprox .HCP := rfl

proof body

Term-mode proof.

  79
  80/-! ## HCP c/a Ratio and φ Connection -/
  81
  82/-- Ideal c/a ratio for HCP: √(8/3) ≈ 1.633. -/

depends on (3)

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