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Distinguishable
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IndisputableMonolith.RecogGeom.Indistinguishable on GitHub at line 134.
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All declarations in this module, on Recognition.
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131/-! ## Distinguishability -/
132
133/-- Two configurations are distinguishable if they produce different events -/
134def Distinguishable {C E : Type*} (r : Recognizer C E) (c₁ c₂ : C) : Prop :=
135 r.R c₁ ≠ r.R c₂
136
137/-- Distinguishability is the negation of indistinguishability -/
138theorem distinguishable_iff_not_indistinguishable {c₁ c₂ : C} :
139 Distinguishable r c₁ c₂ ↔ ¬(c₁ ~[r] c₂) := Iff.rfl
140
141/-- There exist distinguishable configurations (by nontriviality) -/
142theorem exists_distinguishable :
143 ∃ c₁ c₂ : C, Distinguishable r c₁ c₂ :=
144 r.nontrivial
145
146/-! ## Module Status -/
147
148def indistinguishable_status : String :=
149 "✓ Indistinguishable relation defined (RG3)\n" ++
150 "✓ Proved: reflexivity, symmetry, transitivity\n" ++
151 "✓ Proved: indistinguishable_equivalence\n" ++
152 "✓ ResolutionCell defined (equivalence classes)\n" ++
153 "✓ Proved: resolutionCell_eq_fiber\n" ++
154 "✓ Proved: resolutionCells_partition\n" ++
155 "✓ LocalResolution defined\n" ++
156 "✓ Distinguishable defined\n" ++
157 "\n" ++
158 "INDISTINGUISHABILITY (RG3) COMPLETE"
159
160#eval indistinguishable_status
161
162end RecogGeom
163end IndisputableMonolith