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Embrace Multisets: Prime Factorization, GCD, and LCM
We can identify natural numbers with the multiset of their prime factors. The operations of GCD and LCM then correspond to multiset intersection and symmetric difference. We elaborate on this in great detail accessible to math & CS undergraduates.
Embrace Multisets & Relations (Series)
Taking selected undergraduate material of math and CS that is classically taught with sets & functions and now presenting it with multisets & relations.