da32bdd79c
This PR adds an addition newline before the "Additional diagnostic information may be available using the `set_option ... true` command." messages, to provide better visual separation from the main error message.
29 lines
1,015 B
Text
29 lines
1,015 B
Text
class Fintype (α : Type u) where
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class Preorder (α : Type u) extends LT α, LE α where
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lt := fun a b => a ≤ b ∧ ¬b ≤ a
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structure Mappish (dIn dOut : Type u) [Fintype dIn] [Fintype dOut] where
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k : Nat
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variable {dIn dOut dOut₂ : Type} [Fintype dIn] [Fintype dOut] [Fintype dOut₂]
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def IsGood [DecidableEq dOut] [DecidableEq dOut₂] (Λ : Mappish dIn dOut) (Λ₂ : Mappish dIn dOut₂) : Prop :=
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∃ (D : Mappish dOut (dOut₂)), D.k = Λ.k + Λ₂.k
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/--
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error: failed to synthesize
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Fintype v
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Additional diagnostic information may be available using the `set_option diagnostics true` command.
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-/
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#guard_msgs in
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def MappishOrder [DecidableEq dIn] : Preorder
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(Σ dOut : Sigma (fun t ↦ Fintype t × DecidableEq t), let fin := dOut.snd.1; Mappish dIn dOut.fst) where
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le Λ₁ Λ₂ := by
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let u := Λ₁.fst.fst;
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let v := Λ₂.fst.fst;
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let ⟨w,x⟩ := Λ₁.fst.snd;
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let ⟨y,z⟩ := Λ₂.fst.snd;
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clear y;
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exact @IsGood dIn v u _ _ _ _ _ Λ₂.snd Λ₁.snd
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