{"id":"subtraction-order-assumes-bst-validity","text":"`node.val - self.prev` (without `abs()`) is correct only because inorder traversal on a valid BST visits values in non-decreasing order; the code does not verify the BST property.","truth_value":"IN","source":"entries/2026/06/06/minimum-absolute-difference-in-bst-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"subtraction-order-assumes-bst-validity","truth_value":"IN","reason":"premise"}]}}