min a b + max a b = a + bGCD a b * LCD a b = a * bμ(A ∩ B) + μ(A ∪ B) = μ(A) + μ(B)

What is the general name for these correspondences? And what are other examples?

• Positive (incl. 0) numbers, ordered by subtractability, ≤.• Integers, ordered by divisibility, |.• Measurable sets / probabilities, ordered by inclusion / entailment, ⊆.

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Andrew Miloradovsky@amiloradovsky@mathstodon.xyz• Positive (incl. 0) numbers, ordered by subtractability, ≤.

• Integers, ordered by divisibility, |.

• Measurable sets / probabilities, ordered by inclusion / entailment, ⊆.