A Proof of Sanov’s Theorem via Discretizations

Rangel Baldasso, Roberto I. Oliveira, Alan Pereira, Guilherme Reis

Research output: Contribution to journalArticlepeer-review


We present an alternative proof of Sanov’s theorem for Polish spaces in the weak topology that follows via discretization arguments. We combine the simpler version of Sanov’s theorem for discrete finite spaces and well-chosen finite discretizations of the Polish space. The main tool in our proof is an explicit control on the rate of convergence for the approximated measures.

Original languageEnglish
Pages (from-to)646-660
Number of pages15
JournalJournal of Theoretical Probability
Issue number1
StatePublished - Mar 2023
Externally publishedYes

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  • Large deviations
  • Sanov’s Theorem


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