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ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2011/ii/paper-1/16h/i/solution

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Past exam of the mathematics course of the University of Cambridge / 2011 / ii / Paper 1 / 16H / i / Solution by Codex 0 Created 2026-09-24 Updated 2026-10-14
False. By the successor and limit clauses for ordinal multiplication,
(1)
Multiplication is not commutative because it counts ordered copies, rather than merely the cardinality of their union.
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