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author | herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2003-11-29 17:28:49 +0000 |
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committer | herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2003-11-29 17:28:49 +0000 |
commit | 9a6e3fe764dc2543dfa94de20fe5eec42d6be705 (patch) | |
tree | 77c0021911e3696a8c98e35a51840800db4be2a9 /theories/Arith/Compare_dec.v | |
parent | 9058fb97426307536f56c3e7447be2f70798e081 (diff) |
Remplacement des fichiers .v ancienne syntaxe de theories, contrib et states par les fichiers nouvelle syntaxe
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@5027 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Arith/Compare_dec.v')
-rwxr-xr-x | theories/Arith/Compare_dec.v | 104 |
1 files changed, 51 insertions, 53 deletions
diff --git a/theories/Arith/Compare_dec.v b/theories/Arith/Compare_dec.v index a7cb9bd92..d88d6f29b 100755 --- a/theories/Arith/Compare_dec.v +++ b/theories/Arith/Compare_dec.v @@ -8,102 +8,100 @@ (*i $Id$ i*) -Require Le. -Require Lt. -Require Gt. -Require Decidable. +Require Import Le. +Require Import Lt. +Require Import Gt. +Require Import Decidable. -V7only [Import nat_scope.]. Open Local Scope nat_scope. -Implicit Variables Type m,n,x,y:nat. +Implicit Types m n x y : nat. -Definition zerop : (n:nat){n=O}+{lt O n}. -NewDestruct n; Auto with arith. +Definition zerop : forall n, {n = 0} + {0 < n}. +destruct n; auto with arith. Defined. -Definition lt_eq_lt_dec : (n,m:nat){(lt n m)}+{n=m}+{(lt m n)}. +Definition lt_eq_lt_dec : forall n m, {n < m} + {n = m} + {m < n}. Proof. -NewInduction n; Destruct m; Auto with arith. -Intros m0; Elim (IHn m0); Auto with arith. -NewInduction 1; Auto with arith. +induction n; simple destruct m; auto with arith. +intros m0; elim (IHn m0); auto with arith. +induction 1; auto with arith. Defined. -Lemma gt_eq_gt_dec : (n,m:nat)({(gt m n)}+{n=m})+{(gt n m)}. +Lemma gt_eq_gt_dec : forall n m, {m > n} + {n = m} + {n > m}. Proof lt_eq_lt_dec. -Lemma le_lt_dec : (n,m:nat) {le n m} + {lt m n}. +Lemma le_lt_dec : forall n m, {n <= m} + {m < n}. Proof. -NewInduction n. -Auto with arith. -NewInduction m. -Auto with arith. -Elim (IHn m); Auto with arith. +induction n. +auto with arith. +induction m. +auto with arith. +elim (IHn m); auto with arith. Defined. -Definition le_le_S_dec : (n,m:nat) {le n m} + {le (S m) n}. +Definition le_le_S_dec : forall n m, {n <= m} + {S m <= n}. Proof. -Exact le_lt_dec. +exact le_lt_dec. Defined. -Definition le_ge_dec : (n,m:nat) {le n m} + {ge n m}. +Definition le_ge_dec : forall n m, {n <= m} + {n >= m}. Proof. -Intros; Elim (le_lt_dec n m); Auto with arith. +intros; elim (le_lt_dec n m); auto with arith. Defined. -Definition le_gt_dec : (n,m:nat){(le n m)}+{(gt n m)}. +Definition le_gt_dec : forall n m, {n <= m} + {n > m}. Proof. -Exact le_lt_dec. +exact le_lt_dec. Defined. -Definition le_lt_eq_dec : (n,m:nat)(le n m)->({(lt n m)}+{n=m}). +Definition le_lt_eq_dec : forall n m, n <= m -> {n < m} + {n = m}. Proof. -Intros; Elim (lt_eq_lt_dec n m); Auto with arith. -Intros; Absurd (lt m n); Auto with arith. +intros; elim (lt_eq_lt_dec n m); auto with arith. +intros; absurd (m < n); auto with arith. Defined. (** Proofs of decidability *) -Theorem dec_le:(x,y:nat)(decidable (le x y)). -Intros x y; Unfold decidable ; Elim (le_gt_dec x y); [ - Auto with arith -| Intro; Right; Apply gt_not_le; Assumption]. +Theorem dec_le : forall n m, decidable (n <= m). +intros x y; unfold decidable in |- *; elim (le_gt_dec x y); + [ auto with arith | intro; right; apply gt_not_le; assumption ]. Qed. -Theorem dec_lt:(x,y:nat)(decidable (lt x y)). -Intros x y; Unfold lt; Apply dec_le. +Theorem dec_lt : forall n m, decidable (n < m). +intros x y; unfold lt in |- *; apply dec_le. Qed. -Theorem dec_gt:(x,y:nat)(decidable (gt x y)). -Intros x y; Unfold gt; Apply dec_lt. +Theorem dec_gt : forall n m, decidable (n > m). +intros x y; unfold gt in |- *; apply dec_lt. Qed. -Theorem dec_ge:(x,y:nat)(decidable (ge x y)). -Intros x y; Unfold ge; Apply dec_le. +Theorem dec_ge : forall n m, decidable (n >= m). +intros x y; unfold ge in |- *; apply dec_le. Qed. -Theorem not_eq : (x,y:nat) ~ x=y -> (lt x y) \/ (lt y x). -Intros x y H; Elim (lt_eq_lt_dec x y); [ - Intros H1; Elim H1; [ Auto with arith | Intros H2; Absurd x=y; Assumption] -| Auto with arith]. +Theorem not_eq : forall n m, n <> m -> n < m \/ m < n. +intros x y H; elim (lt_eq_lt_dec x y); + [ intros H1; elim H1; + [ auto with arith | intros H2; absurd (x = y); assumption ] + | auto with arith ]. Qed. -Theorem not_le : (x,y:nat) ~(le x y) -> (gt x y). -Intros x y H; Elim (le_gt_dec x y); - [ Intros H1; Absurd (le x y); Assumption | Trivial with arith ]. +Theorem not_le : forall n m, ~ n <= m -> n > m. +intros x y H; elim (le_gt_dec x y); + [ intros H1; absurd (x <= y); assumption | trivial with arith ]. Qed. -Theorem not_gt : (x,y:nat) ~(gt x y) -> (le x y). -Intros x y H; Elim (le_gt_dec x y); - [ Trivial with arith | Intros H1; Absurd (gt x y); Assumption]. +Theorem not_gt : forall n m, ~ n > m -> n <= m. +intros x y H; elim (le_gt_dec x y); + [ trivial with arith | intros H1; absurd (x > y); assumption ]. Qed. -Theorem not_ge : (x,y:nat) ~(ge x y) -> (lt x y). -Intros x y H; Exact (not_le y x H). +Theorem not_ge : forall n m, ~ n >= m -> n < m. +intros x y H; exact (not_le y x H). Qed. -Theorem not_lt : (x,y:nat) ~(lt x y) -> (ge x y). -Intros x y H; Exact (not_gt y x H). +Theorem not_lt : forall n m, ~ n < m -> n >= m. +intros x y H; exact (not_gt y x H). Qed. - |