19 lines
566 B
Text
19 lines
566 B
Text
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import general_notation type
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inductive fibrant [class] (T : Type) : Type :=
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fibrant_mk : fibrant T
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inductive path {A : Type'} [fA : fibrant A] (a : A) : A → Type :=
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idpath : path a a
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notation a ≈ b := path a b
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axiom path_fibrant {A : Type'} [fA : fibrant A] (a b : A) : fibrant (path a b)
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instance [persistent] path_fibrant
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axiom imp_fibrant {A : Type'} {B : Type'} [C1 : fibrant A] [C2 : fibrant B] : fibrant (A → B)
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instance imp_fibrant
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definition test {A : Type} [fA : fibrant A] {x y : A} :
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Π (z : A), y ≈ z → fibrant (x ≈ y → x ≈ z) := _
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