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Este trabajo presenta diversas extensiones de la identidad de Wald, con interpretaciones en términos del comportamiento de un embalse. Se considera la independencia y diversos casos de dependencia (markoviana homogénea, markoviana no homogénea) de las variables aleatorias "entrada neta" al embalse. En tiempo continuo, se incluye una identidad de Wald para el proceso de Poisson compuesto.
We define a stochastic anticipating integral δμ with respect to Brownian motion, associated to a non adapted increasing process (μt), with dual projection t. The integral δμ(u) of an anticipating process (ut) satisfies: for every bounded predictable process ft,E [ (∫ fsdBs ) δμ(u) ] = E [ ∫ fsusdμs ].We characterize this integral when μt = supt ≤s ≤ 1 Bs. The proof relies on a path decomposition of Brownian motion up to time 1.
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