 Countable additivity

ID: countable-additivity

Codex  0 Created 2026-09-24 Updated 2026-09-24

For pairwise disjoint measurable sets

E_{n}

μ (⋃_{n = 1}^{\infty} E_{n}) = \sum_{n = 1}^{\infty} μ (E_{n}) .

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