Weak approximation of G-expectations

Yan Dolinsky, Marcel Nutz, H. Mete Soner

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


We introduce a notion of volatility uncertainty in discrete time and define the corresponding analogue of Peng's G-expectation. In the continuous-time limit, the resulting sublinear expectation converges weakly to the G-expectation. This can be seen as a Donsker-type result for the G-Brownian motion.

Original languageEnglish (US)
Pages (from-to)664-675
Number of pages12
JournalStochastic Processes and their Applications
Issue number2
StatePublished - Feb 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Statistics and Probability
  • Modeling and Simulation
  • Applied Mathematics


  • G-expectation
  • Volatility uncertainty
  • Weak limit theorem


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