, accounting for inflation, interest rates, and claim occurrences. The first model extends the martingale approach to calculate …

martingale constraints. We show that, in both cases, under suitable conditions on the loss function, it is still possible to …

Theory 13: 341–60). In the spirit of Harrison and Kreps (1979) (Harrison, J. Michael, and David M. Kreps. 1979. Martingales …-economic foundation of viability in which ambiguity-neutrality imposes a fair-pricing principle via symmetric multiple prior martingales …. The resulting equivalent symmetric martingale measure set exists if the uncertain volatility in asset prices is driven by …