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theorem proved term proof

primeSupport_directed

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formal statement (Lean)

  42theorem primeSupport_directed (S T : PrimeSupport) :
  43    ∃ U : PrimeSupport, S ⊆ U ∧ T ⊆ U := by

proof body

Term-mode proof.

  44  exact ⟨S ∪ T, Finset.subset_union_left, Finset.subset_union_right⟩
  45
  46/-- Prime-event membership persists under support enlargement. -/

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depends on (7)

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