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Complements on Continuous Path Processes

Author

Listed:
  • Monique Jeanblanc

    (Université d’Evry)

  • Marc Yor

    (Université Paris VI)

  • Marc Chesney

    (Universität Zürich)

Abstract

In this chapter, we present the important notion of time change, which will be crucial when studying applications to finance in a Lévy process setting. We then introduce the operation of dual predictable projection, which will be an important tool when working with the reduced form approach in the default risk framework (of course, it has many other applications as will appear clearly in subsequent chapters). We present important facts about general homogeneous diffusions, in particular concerning their Green functions, scale functions and speed measures. These three quantities are of great interest when valuing options in a general setting. We study applications related to last passage times. A section is devoted to enlargements of filtrations, an important subject when dealing with insider trading.

Suggested Citation

Handle: RePEc:spr:sprfcp:978-1-84628-737-4_5
DOI: 10.1007/978-1-84628-737-4_5
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