Displaying similar documents to “On a Martingale Related to a Strictly Stationary Random Process in R1.”

An alternative proof of the uniqueness of martingale-coboundary decomposition of strictly stationary processes

Takehiko Morita (2019)

Commentationes Mathematicae Universitatis Carolinae

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P. Samek and D. Volný, in the paper ``Uniqueness of a martingale-coboundary decomposition of a stationary processes" (1992), showed the uniqueness of martingale-coboundary decomposition of strictly stationary processes. The original proof is given by reducing the problem to the ergodic case. In this note we give another proof without such reduction.

On randomized stopping times.

Concepción Arenas Solá (1990)

Trabajos de Estadística

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In this note we give a proof of the fact that the extremal elements of the set of randomized stopping times are exactly the stopping times.