Weak Approximation of G-Expectations
classification
🧮 math.PR
math.OC
keywords
g-expectationanalogueapproximationcontinuous-timeconvergescorrespondingdefinediscrete
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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.
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