{"id":"diagonal-sum-n1-correctness","text":"For a 1x1 matrix, the loop adds the element twice and the odd-correction subtracts it once, yielding the correct result through the general path rather than special-case code.","truth_value":"IN","source":"entries/2026/06/06/matrix-diagonal-sum-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"diagonal-sum-n1-correctness","truth_value":"IN","reason":"premise"}]}}