{"id":"intersection-uses-in-place-narrowing","text":"The result set only shrinks across iterations via &=; no element can appear in the output that wasn't in nums[0].","truth_value":"IN","source":"entries/2026/06/06/intersection-of-multiple-arrays-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"intersection-uses-in-place-narrowing","truth_value":"IN","reason":"premise"}]}}