acb188f11c
This attribute, which was implemented in #3640, is applied to the following structures: `Sigma`, `PSigma`, `PProd`, `And`, `Subtype`, and `Fin`. These were given this attribute in Lean 3.
45 lines
2.1 KiB
Text
45 lines
2.1 KiB
Text
decreasing_by.lean:36:0-43:17: error: Could not find a decreasing measure.
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The arguments relate at each recursive call as follows:
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(<, ≤, =: relation proved, ? all proofs failed, _: no proof attempted)
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n m
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1) 36:29-43 = ?
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2) 36:46-62 ? _
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Please use `termination_by` to specify a decreasing measure.
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decreasing_by.lean:66:0-73:19: error: Could not find a decreasing measure.
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The arguments relate at each recursive call as follows:
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(<, ≤, =: relation proved, ? all proofs failed, _: no proof attempted)
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n m
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1) 66:29-43 = ?
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2) 66:46-62 ? _
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Please use `termination_by` to specify a decreasing measure.
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decreasing_by.lean:81:13-83:3: error: unexpected token 'end'; expected '{' or tactic
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decreasing_by.lean:81:0-81:13: error: unsolved goals
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n m : Nat
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⊢ (invImage (fun x => PSigma.casesOn x fun n m => (n, m)) Prod.instWellFoundedRelationProd).1 ⟨n, dec2 m⟩ ⟨n, m⟩
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n m : Nat
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⊢ (invImage (fun x => PSigma.casesOn x fun n m => (n, m)) Prod.instWellFoundedRelationProd).1 ⟨dec1 n, 100⟩ ⟨n, m⟩
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decreasing_by.lean:91:0-91:22: error: unsolved goals
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case a
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n m : Nat
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⊢ (invImage (fun x => PSigma.casesOn x fun n m => (n, m)) Prod.instWellFoundedRelationProd).1 ⟨n, dec2 m⟩ ⟨n, m⟩
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n m : Nat
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⊢ (invImage (fun x => PSigma.casesOn x fun n m => (n, m)) Prod.instWellFoundedRelationProd).1 ⟨dec1 n, 100⟩ ⟨n, m⟩
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decreasing_by.lean:99:0-100:22: error: Could not find a decreasing measure.
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The arguments relate at each recursive call as follows:
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(<, ≤, =: relation proved, ? all proofs failed, _: no proof attempted)
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n m
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1) 99:29-43 = ?
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2) 99:46-62 ? _
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Please use `termination_by` to specify a decreasing measure.
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decreasing_by.lean:110:0-113:17: error: unsolved goals
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n m : Nat
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⊢ (invImage (fun x => PSigma.casesOn x fun n m => (n, m)) Prod.instWellFoundedRelationProd).1 ⟨dec1 n, 100⟩ ⟨n, m⟩
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decreasing_by.lean:121:0-125:17: error: Could not find a decreasing measure.
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The arguments relate at each recursive call as follows:
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(<, ≤, =: relation proved, ? all proofs failed, _: no proof attempted)
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n m
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1) 121:29-43 = ?
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2) 121:46-62 ? _
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Please use `termination_by` to specify a decreasing measure.
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