{"id":"excel-column-bijective-base-26","text":"Excel column numbering is bijective base-26 (digits 1–26, no zero), not standard base-26 — this is why `convert_to_title` needs `columnNumber -= 1` each iteration and why `title_to_number` uses `ord(c) - ord('A') + 1`.","truth_value":"IN","source":"entries/2026/06/06/excel-sheet-column-number-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"excel-column-bijective-base-26","truth_value":"IN","reason":"premise"}]}}