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theorem proved term proof

truth_eval_implies_non_contradiction

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formal statement (Lean)

  41theorem truth_eval_implies_non_contradiction
  42    (C : ComparisonOperator)
  43    (hT : TruthEvaluableComparison C) :
  44    NonContradiction C :=

proof body

Term-mode proof.

  45  hT.reorder_single_valued
  46
  47/-- Truth-evaluability of every positive pair gives totality/continuity on the
  48open positive quadrant. -/

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depends on (8)

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