OAI/Analysis/Nonexpansive/BranchContradiction.lean
2 declarations, 0 contain sorry, 0 declared as axioms
The branch contradiction from the actual finite witnesses
The actual ordered tree supplies detector labels and summable budgets. The finite switching witnesses give a feasible branch. Weak compactness of the whole difference ball keeps one common vector, whereas the same detectors vanish on its closed difference span by density and their uniform norm bound.
- theorem
OAI.ReflexiveFixedPoints.abs_apply_sub_le_of_detectorline 26Source documentation
Two detector values in the same interval of length e differ by at most e.
theorem abs_apply_sub_le_of_detector (f : X →L[ℝ] ℝ) (hf : ‖f‖ ≤ 1) (y a b : X) (e : ℝ) (hya : ‖y - a‖ ≤ 1) (hyb : ‖y - b‖ ≤ 1) (ha : 1 - e ≤ f (y - a)) (hb : 1 - e ≤ f (y - b)) : |f (a - b)| ≤ e := by … - theorem
OAI.ReflexiveFixedPoints.tree_finite_witnesses_contradictionline 46Source documentation
The precise outputs of the tree and finite switching construction cannot coexist in the normalized minimal data. Every listed input is supplied by an earlier concrete producer; no branch or pointwise-vanishing premise is used.
theorem tree_finite_witnesses_contradiction (D : NormalizedMinimalData (X := X)) (T : OrderedTree) …Mentions: OAI.ReflexiveFixedPoints.NormalizedMinimalData, OAI.ReflexiveFixedPoints.OrderedTree