{"id":"pivot-index-boundary-no-special-case","text":"Index 0 and index n-1 are valid pivot positions without special-case code because `left_sum` starts at 0 and the right sum is computed algebraically — empty-side sums are implicitly zero.","truth_value":"IN","source":"entries/2026/06/06/find-pivot-index-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"pivot-index-boundary-no-special-case","truth_value":"IN","reason":"premise"}]}}