diff options
Diffstat (limited to 'lib/Intv.v')
| -rw-r--r-- | lib/Intv.v | 44 |
1 files changed, 22 insertions, 22 deletions
@@ -41,14 +41,14 @@ Lemma notin_range: forall x i, x < fst i \/ x >= snd i -> ~In x i. Proof. - unfold In; intros; omega. + unfold In; intros; lia. Qed. Lemma range_notin: forall x i, ~In x i -> fst i < snd i -> x < fst i \/ x >= snd i. Proof. - unfold In; intros; omega. + unfold In; intros; lia. Qed. (** * Emptyness *) @@ -60,26 +60,26 @@ Lemma empty_dec: Proof. unfold empty; intros. case (zle (snd i) (fst i)); intros. - left; omega. - right; omega. + left; lia. + right; lia. Qed. Lemma is_notempty: forall i, fst i < snd i -> ~empty i. Proof. - unfold empty; intros; omega. + unfold empty; intros; lia. Qed. Lemma empty_notin: forall x i, empty i -> ~In x i. Proof. - unfold empty, In; intros. omega. + unfold empty, In; intros. lia. Qed. Lemma in_notempty: forall x i, In x i -> ~empty i. Proof. - unfold empty, In; intros. omega. + unfold empty, In; intros. lia. Qed. (** * Disjointness *) @@ -109,7 +109,7 @@ Lemma disjoint_range: forall i j, snd i <= fst j \/ snd j <= fst i -> disjoint i j. Proof. - unfold disjoint, In; intros. omega. + unfold disjoint, In; intros. lia. Qed. Lemma range_disjoint: @@ -127,13 +127,13 @@ Proof. (* Case 1.1: i ends to the left of j, OK *) auto. (* Case 1.2: i ends to the right of j's start, not disjoint. *) - elim (H (fst j)). red; omega. red; omega. + elim (H (fst j)). red; lia. red; lia. (* Case 2: j starts to the left of i *) destruct (zle (snd j) (fst i)). (* Case 2.1: j ends to the left of i, OK *) auto. (* Case 2.2: j ends to the right of i's start, not disjoint. *) - elim (H (fst i)). red; omega. red; omega. + elim (H (fst i)). red; lia. red; lia. Qed. Lemma range_disjoint': @@ -141,7 +141,7 @@ Lemma range_disjoint': disjoint i j -> fst i < snd i -> fst j < snd j -> snd i <= fst j \/ snd j <= fst i. Proof. - intros. exploit range_disjoint; eauto. unfold empty; intuition omega. + intros. exploit range_disjoint; eauto. unfold empty; intuition lia. Qed. Lemma disjoint_dec: @@ -163,14 +163,14 @@ Lemma in_shift: forall x i delta, In x i -> In (x + delta) (shift i delta). Proof. - unfold shift, In; intros. simpl. omega. + unfold shift, In; intros. simpl. lia. Qed. Lemma in_shift_inv: forall x i delta, In x (shift i delta) -> In (x - delta) i. Proof. - unfold shift, In; simpl; intros. omega. + unfold shift, In; simpl; intros. lia. Qed. (** * Enumerating the elements of an interval *) @@ -182,7 +182,7 @@ Variable lo: Z. Function elements_rec (hi: Z) {wf (Zwf lo) hi} : list Z := if zlt lo hi then (hi-1) :: elements_rec (hi-1) else nil. Proof. - intros. red. omega. + intros. red. lia. apply Zwf_well_founded. Qed. @@ -192,8 +192,8 @@ Lemma In_elements_rec: Proof. intros. functional induction (elements_rec hi). simpl; split; intros. - destruct H. clear IHl. omega. rewrite IHl in H. clear IHl. omega. - destruct (zeq (hi - 1) x); auto. right. rewrite IHl. clear IHl. omega. + destruct H. clear IHl. lia. rewrite IHl in H. clear IHl. lia. + destruct (zeq (hi - 1) x); auto. right. rewrite IHl. clear IHl. lia. simpl; intuition. Qed. @@ -241,20 +241,20 @@ Program Fixpoint forall_rec (hi: Z) {wf (Zwf lo) hi}: left _ _ . Next Obligation. - red. omega. + red. lia. Qed. Next Obligation. - assert (x = hi - 1 \/ x < hi - 1) by omega. + assert (x = hi - 1 \/ x < hi - 1) by lia. destruct H2. congruence. auto. Qed. Next Obligation. - exists wildcard'; split; auto. omega. + exists wildcard'; split; auto. lia. Qed. Next Obligation. - exists (hi - 1); split; auto. omega. + exists (hi - 1); split; auto. lia. Qed. Next Obligation. - omegaContradiction. + extlia. Defined. End FORALL. @@ -276,7 +276,7 @@ Variable a: A. Function fold_rec (hi: Z) {wf (Zwf lo) hi} : A := if zlt lo hi then f (hi - 1) (fold_rec (hi - 1)) else a. Proof. - intros. red. omega. + intros. red. lia. apply Zwf_well_founded. Qed. |