diff options
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/ZArith/auxiliary.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/ZArith/auxiliary.v')
-rw-r--r-- | theories/ZArith/auxiliary.v | 251 |
1 files changed, 91 insertions, 160 deletions
diff --git a/theories/ZArith/auxiliary.v b/theories/ZArith/auxiliary.v index 3f713c5ed..50c22b1b4 100644 --- a/theories/ZArith/auxiliary.v +++ b/theories/ZArith/auxiliary.v @@ -11,10 +11,10 @@ (** Binary Integers (Pierre Crégut, CNET, Lannion, France) *) Require Export Arith. -Require BinInt. -Require Zorder. -Require Decidable. -Require Peano_dec. +Require Import BinInt. +Require Import Zorder. +Require Import Decidable. +Require Import Peano_dec. Require Export Compare_dec. Open Local Scope Z_scope. @@ -22,198 +22,129 @@ Open Local Scope Z_scope. (**********************************************************************) (** Moving terms from one side to the other of an inequality *) -Theorem Zne_left : (x,y:Z) (Zne x y) -> (Zne (Zplus x (Zopp y)) ZERO). +Theorem Zne_left : forall n m:Z, Zne n m -> Zne (n + - m) 0. Proof. -Intros x y; Unfold Zne; Unfold not; Intros H1 H2; Apply H1; -Apply Zsimpl_plus_l with (Zopp y); Rewrite Zplus_inverse_l; Rewrite Zplus_sym; -Trivial with arith. +intros x y; unfold Zne in |- *; unfold not in |- *; intros H1 H2; apply H1; + apply Zplus_reg_l with (- y); rewrite Zplus_opp_l; + rewrite Zplus_comm; trivial with arith. Qed. -Theorem Zegal_left : (x,y:Z) (x=y) -> (Zplus x (Zopp y)) = ZERO. +Theorem Zegal_left : forall n m:Z, n = m -> n + - m = 0. Proof. -Intros x y H; -Apply (Zsimpl_plus_l y);Rewrite -> Zplus_permute; -Rewrite -> Zplus_inverse_r;Do 2 Rewrite -> Zero_right;Assumption. +intros x y H; apply (Zplus_reg_l y); rewrite Zplus_permute; + rewrite Zplus_opp_r; do 2 rewrite Zplus_0_r; assumption. Qed. -Theorem Zle_left : (x,y:Z) (Zle x y) -> (Zle ZERO (Zplus y (Zopp x))). +Theorem Zle_left : forall n m:Z, n <= m -> 0 <= m + - n. Proof. -Intros x y H; Replace ZERO with (Zplus x (Zopp x)). -Apply Zle_reg_r; Trivial. -Apply Zplus_inverse_r. +intros x y H; replace 0 with (x + - x). +apply Zplus_le_compat_r; trivial. +apply Zplus_opp_r. Qed. -Theorem Zle_left_rev : (x,y:Z) (Zle ZERO (Zplus y (Zopp x))) - -> (Zle x y). +Theorem Zle_left_rev : forall n m:Z, 0 <= m + - n -> n <= m. Proof. -Intros x y H; Apply Zsimpl_le_plus_r with (Zopp x). -Rewrite Zplus_inverse_r; Trivial. +intros x y H; apply Zplus_le_reg_r with (- x). +rewrite Zplus_opp_r; trivial. Qed. -Theorem Zlt_left_rev : (x,y:Z) (Zlt ZERO (Zplus y (Zopp x))) - -> (Zlt x y). +Theorem Zlt_left_rev : forall n m:Z, 0 < m + - n -> n < m. Proof. -Intros x y H; Apply Zsimpl_lt_plus_r with (Zopp x). -Rewrite Zplus_inverse_r; Trivial. +intros x y H; apply Zplus_lt_reg_r with (- x). +rewrite Zplus_opp_r; trivial. Qed. -Theorem Zlt_left : - (x,y:Z) (Zlt x y) -> (Zle ZERO (Zplus (Zplus y (NEG xH)) (Zopp x))). +Theorem Zlt_left : forall n m:Z, n < m -> 0 <= m + -1 + - n. Proof. -Intros x y H; Apply Zle_left; Apply Zle_S_n; -Change (Zle (Zs x) (Zs (Zpred y))); Rewrite <- Zs_pred; Apply Zlt_le_S; -Assumption. +intros x y H; apply Zle_left; apply Zsucc_le_reg; + change (Zsucc x <= Zsucc (Zpred y)) in |- *; rewrite <- Zsucc_pred; + apply Zlt_le_succ; assumption. Qed. -Theorem Zlt_left_lt : - (x,y:Z) (Zlt x y) -> (Zlt ZERO (Zplus y (Zopp x))). +Theorem Zlt_left_lt : forall n m:Z, n < m -> 0 < m + - n. Proof. -Intros x y H; Replace ZERO with (Zplus x (Zopp x)). -Apply Zlt_reg_r; Trivial. -Apply Zplus_inverse_r. +intros x y H; replace 0 with (x + - x). +apply Zplus_lt_compat_r; trivial. +apply Zplus_opp_r. Qed. -Theorem Zge_left : (x,y:Z) (Zge x y) -> (Zle ZERO (Zplus x (Zopp y))). +Theorem Zge_left : forall n m:Z, n >= m -> 0 <= n + - m. Proof. -Intros x y H; Apply Zle_left; Apply Zge_le; Assumption. +intros x y H; apply Zle_left; apply Zge_le; assumption. Qed. -Theorem Zgt_left : - (x,y:Z) (Zgt x y) -> (Zle ZERO (Zplus (Zplus x (NEG xH)) (Zopp y))). +Theorem Zgt_left : forall n m:Z, n > m -> 0 <= n + -1 + - m. Proof. -Intros x y H; Apply Zlt_left; Apply Zgt_lt; Assumption. +intros x y H; apply Zlt_left; apply Zgt_lt; assumption. Qed. -Theorem Zgt_left_gt : - (x,y:Z) (Zgt x y) -> (Zgt (Zplus x (Zopp y)) ZERO). +Theorem Zgt_left_gt : forall n m:Z, n > m -> n + - m > 0. Proof. -Intros x y H; Replace ZERO with (Zplus y (Zopp y)). -Apply Zgt_reg_r; Trivial. -Apply Zplus_inverse_r. +intros x y H; replace 0 with (y + - y). +apply Zplus_gt_compat_r; trivial. +apply Zplus_opp_r. Qed. -Theorem Zgt_left_rev : (x,y:Z) (Zgt (Zplus x (Zopp y)) ZERO) - -> (Zgt x y). +Theorem Zgt_left_rev : forall n m:Z, n + - m > 0 -> n > m. Proof. -Intros x y H; Apply Zsimpl_gt_plus_r with (Zopp y). -Rewrite Zplus_inverse_r; Trivial. +intros x y H; apply Zplus_gt_reg_r with (- y). +rewrite Zplus_opp_r; trivial. Qed. (**********************************************************************) (** Factorization lemmas *) -Theorem Zred_factor0 : (x:Z) x = (Zmult x (POS xH)). -Intro x; Rewrite (Zmult_n_1 x); Reflexivity. +Theorem Zred_factor0 : forall n:Z, n = n * 1. +intro x; rewrite (Zmult_1_r x); reflexivity. Qed. -Theorem Zred_factor1 : (x:Z) (Zplus x x) = (Zmult x (POS (xO xH))). +Theorem Zred_factor1 : forall n:Z, n + n = n * 2. Proof. -Exact Zplus_Zmult_2. -Qed. - -Theorem Zred_factor2 : - (x,y:Z) (Zplus x (Zmult x y)) = (Zmult x (Zplus (POS xH) y)). - -Intros x y; Pattern 1 x ; Rewrite <- (Zmult_n_1 x); -Rewrite <- Zmult_plus_distr_r; Trivial with arith. -Qed. - -Theorem Zred_factor3 : - (x,y:Z) (Zplus (Zmult x y) x) = (Zmult x (Zplus (POS xH) y)). - -Intros x y; Pattern 2 x ; Rewrite <- (Zmult_n_1 x); -Rewrite <- Zmult_plus_distr_r; Rewrite Zplus_sym; Trivial with arith. -Qed. -Theorem Zred_factor4 : - (x,y,z:Z) (Zplus (Zmult x y) (Zmult x z)) = (Zmult x (Zplus y z)). -Intros x y z; Symmetry; Apply Zmult_plus_distr_r. -Qed. - -Theorem Zred_factor5 : (x,y:Z) (Zplus (Zmult x ZERO) y) = y. - -Intros x y; Rewrite <- Zmult_n_O;Auto with arith. -Qed. - -Theorem Zred_factor6 : (x:Z) x = (Zplus x ZERO). - -Intro; Rewrite Zero_right; Trivial with arith. -Qed. - -Theorem Zle_mult_approx: - (x,y,z:Z) (Zgt x ZERO) -> (Zgt z ZERO) -> (Zle ZERO y) -> - (Zle ZERO (Zplus (Zmult y x) z)). - -Intros x y z H1 H2 H3; Apply Zle_trans with m:=(Zmult y x) ; [ - Apply Zle_mult; Assumption -| Pattern 1 (Zmult y x) ; Rewrite <- Zero_right; Apply Zle_reg_l; - Apply Zlt_le_weak; Apply Zgt_lt; Assumption]. -Qed. - -Theorem Zmult_le_approx: - (x,y,z:Z) (Zgt x ZERO) -> (Zgt x z) -> - (Zle ZERO (Zplus (Zmult y x) z)) -> (Zle ZERO y). - -Intros x y z H1 H2 H3; Apply Zlt_n_Sm_le; Apply Zmult_lt with x; [ - Assumption - | Apply Zle_lt_trans with 1:=H3 ; Rewrite <- Zmult_Sm_n; - Apply Zlt_reg_l; Apply Zgt_lt; Assumption]. - -Qed. - -V7only [ -(* Compatibility *) -Require Znat. -Require Zcompare. -Notation neq := neq. -Notation Zne := Zne. -Notation OMEGA2 := Zle_0_plus. -Notation add_un_Zs := add_un_Zs. -Notation inj_S := inj_S. -Notation Zplus_S_n := Zplus_S_n. -Notation inj_plus := inj_plus. -Notation inj_mult := inj_mult. -Notation inj_neq := inj_neq. -Notation inj_le := inj_le. -Notation inj_lt := inj_lt. -Notation inj_gt := inj_gt. -Notation inj_ge := inj_ge. -Notation inj_eq := inj_eq. -Notation intro_Z := intro_Z. -Notation inj_minus1 := inj_minus1. -Notation inj_minus2 := inj_minus2. -Notation dec_eq := dec_eq. -Notation dec_Zne := dec_Zne. -Notation dec_Zle := dec_Zle. -Notation dec_Zgt := dec_Zgt. -Notation dec_Zge := dec_Zge. -Notation dec_Zlt := dec_Zlt. -Notation dec_eq_nat := dec_eq_nat. -Notation not_Zge := not_Zge. -Notation not_Zlt := not_Zlt. -Notation not_Zle := not_Zle. -Notation not_Zgt := not_Zgt. -Notation not_Zeq := not_Zeq. -Notation Zopp_one := Zopp_one. -Notation Zopp_Zmult_r := Zopp_Zmult_r. -Notation Zmult_Zopp_left := Zmult_Zopp_left. -Notation Zopp_Zmult_l := Zopp_Zmult_l. -Notation Zcompare_Zplus_compatible2 := Zcompare_Zplus_compatible2. -Notation Zcompare_Zmult_compatible := Zcompare_Zmult_compatible. -Notation Zmult_eq := Zmult_eq. -Notation Z_eq_mult := Z_eq_mult. -Notation Zmult_le := Zmult_le. -Notation Zle_ZERO_mult := Zle_ZERO_mult. -Notation Zgt_ZERO_mult := Zgt_ZERO_mult. -Notation Zle_mult := Zle_mult. -Notation Zmult_lt := Zmult_lt. -Notation Zmult_gt := Zmult_gt. -Notation Zle_Zmult_pos_right := Zle_Zmult_pos_right. -Notation Zle_Zmult_pos_left := Zle_Zmult_pos_left. -Notation Zge_Zmult_pos_right := Zge_Zmult_pos_right. -Notation Zge_Zmult_pos_left := Zge_Zmult_pos_left. -Notation Zge_Zmult_pos_compat := Zge_Zmult_pos_compat. -Notation Zle_mult_simpl := Zle_mult_simpl. -Notation Zge_mult_simpl := Zge_mult_simpl. -Notation Zgt_mult_simpl := Zgt_mult_simpl. -Notation Zgt_square_simpl := Zgt_square_simpl. -]. +exact Zplus_diag_eq_mult_2. +Qed. + +Theorem Zred_factor2 : forall n m:Z, n + n * m = n * (1 + m). + +intros x y; pattern x at 1 in |- *; rewrite <- (Zmult_1_r x); + rewrite <- Zmult_plus_distr_r; trivial with arith. +Qed. + +Theorem Zred_factor3 : forall n m:Z, n * m + n = n * (1 + m). + +intros x y; pattern x at 2 in |- *; rewrite <- (Zmult_1_r x); + rewrite <- Zmult_plus_distr_r; rewrite Zplus_comm; + trivial with arith. +Qed. +Theorem Zred_factor4 : forall n m p:Z, n * m + n * p = n * (m + p). +intros x y z; symmetry in |- *; apply Zmult_plus_distr_r. +Qed. + +Theorem Zred_factor5 : forall n m:Z, n * 0 + m = m. + +intros x y; rewrite <- Zmult_0_r_reverse; auto with arith. +Qed. + +Theorem Zred_factor6 : forall n:Z, n = n + 0. + +intro; rewrite Zplus_0_r; trivial with arith. +Qed. + +Theorem Zle_mult_approx : + forall n m p:Z, n > 0 -> p > 0 -> 0 <= m -> 0 <= m * n + p. + +intros x y z H1 H2 H3; apply Zle_trans with (m := y * x); + [ apply Zmult_gt_0_le_0_compat; assumption + | pattern (y * x) at 1 in |- *; rewrite <- Zplus_0_r; + apply Zplus_le_compat_l; apply Zlt_le_weak; apply Zgt_lt; + assumption ]. +Qed. + +Theorem Zmult_le_approx : + forall n m p:Z, n > 0 -> n > p -> 0 <= m * n + p -> 0 <= m. + +intros x y z H1 H2 H3; apply Zlt_succ_le; apply Zmult_gt_0_lt_0_reg_r with x; + [ assumption + | apply Zle_lt_trans with (1 := H3); rewrite <- Zmult_succ_l_reverse; + apply Zplus_lt_compat_l; apply Zgt_lt; assumption ]. + +Qed. |