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formal statement (Lean)
124theorem astatine_is_halogen : isHalogen 85 := by native_decide
proof body
Term-mode proof.
125
126/-- Neon (Z=10) has zero EA proxy. -/
depends on (5)
Lean names referenced from this declaration's body.
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isHalogen
in IndisputableMonolith.Chemistry.ElectronAffinity
decl_use
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isHalogen
in IndisputableMonolith.Chemistry.IonicBond
decl_use
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has
in IndisputableMonolith.Engineering.AsteroidOreSpectroscopy
decl_use
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Z
in IndisputableMonolith.Masses.Anchor
decl_use
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Z
in IndisputableMonolith.Physics.AnchorPolicyCertified
decl_use