-Instance WeakExprVarEqDecidable : EqDecidable WeakExprVar.
- apply Build_EqDecidable.
- intros.
- destruct v1 as [cv1 k1].
- destruct v2 as [cv2 k2].
- destruct (eqd_dec cv1 cv2); subst.
- destruct (eqd_dec k1 k2); subst.
- left; auto.
- right; intro; apply n; inversion H; subst; auto.
- right; intro; apply n; inversion H; subst; auto.
- Defined.
-
-Instance WeakVarEqDecidable : EqDecidable WeakVar.
- apply Build_EqDecidable.
- induction v1; destruct v2; try (right; intro q; inversion q; fail) ; auto;
- destruct (eqd_dec w w0); subst.
- left; auto.
- right; intro X; apply n; inversion X; auto.
- left; auto.
- right; intro X; apply n; inversion X; auto.
- left; auto.
- right; intro X; apply n; inversion X; auto.
- Defined.
-*)