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2004 | OriginalPaper | Buchkapitel

Supermartingales and Submartingales

verfasst von : Jean Jacod, Philip Protter

Erschienen in: Probability Essentials

Verlag: Springer Berlin Heidelberg

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In Chapter 24 we defined a martingale via an equality for certain conditional expectations. If we replace that equality with an inequality we obtain supermartingales and submartingales. Once again (ω, F, P) is a probability space that is assumed given and fixed, and (Fn)n≥-1 is an increasing sequence of σ-algebras.

Metadaten
Titel
Supermartingales and Submartingales
verfasst von
Jean Jacod
Philip Protter
Copyright-Jahr
2004
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-642-55682-1_25