10 lines
373 B
Text
10 lines
373 B
Text
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-- Copyright (c) 2014 Microsoft Corporation. All rights reserved.
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-- Released under Apache 2.0 license as described in the file LICENSE.
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-- Author: Leonardo de Moura, Jeremy Avigad, Floris van Doorn
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import logic.eq logic.heq data.unit
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structure sigma {A : Type} (B : A → Type) :=
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dpair :: (dpr1 : A) (dpr2 : B dpr1)
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notation `Σ` binders `,` r:(scoped P, sigma P) := r
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