Radon–Nikodym theorem

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Radon-Nikodym theorem by

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

For sigma-finite measures,

ν ≪ μ

implies

ν (A) = \int_{A} (d ν / d μ) d μ

for a nonnegative measurable density unique almost everywhere.

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