c3948cba24
This PR upstreams the definition of `Vector` from Batteries, along with the basic functions.
19 lines
582 B
Text
19 lines
582 B
Text
#check ∃ x, x > 1
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#check ∃ (x y : Nat), x > y
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#check ∃ x y : Nat, x > y
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#check ∃ (x : Nat) (y : Nat), x > y
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theorem ex1 : (∃ x y : Nat, x > y) = (∃ (x : Nat) (y : Nat), x > y) := rfl
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abbrev Vector' α n := { a : Array α // a.size = n }
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#check Σ α n, Vector' α n
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#check Σ (α : Type) (n : Nat), Vector' α n
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#check (α : Type) × (n : Nat) × Vector' α n
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#check Σ' α n, Vector' α n
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#check Σ' (α : Type) (n : Nat), Vector' α n
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#check (α : Type) ×' (n : Nat) ×' Vector' α n
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#check @Vector'
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#check fun (α : Type) => Sigma fun (n : Nat) => Vector' α n
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