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(*         *   The Coq Proof Assistant / The Coq Development Team       *)
(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
(* <O___,, *       (see CREDITS file for the list of authors)           *)
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(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
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(* (c) Copyright 2006-2016 Microsoft Corporation and Inria.                  *)
(* div fintype finfun path bigop. *)

Lemma big_load R (K K' : R -> Type) idx op I r (P : pred I) F :
let s := \big[op/idx]_(i <- r | P i) F i in
K s * K' s -> K' s.