ABSTRACT

It is well-known that modern stochastic calculus has been exhaustively developed under usual conditions. Despite such a well-developed theory, there is evidence to suggest that these very convenient technical conditions cannot necessarily be fulfilled in real-world applications.

Optional Processes: Theory and Applications seeks to delve into the existing theory, new developments and applications of optional processes on "unusual" probability spaces. The development of stochastic calculus of optional processes marks the beginning of a new and more general form of stochastic analysis.

This book aims to provide an accessible, comprehensive and up-to-date exposition of optional processes and their numerous properties. Furthermore, the book presents not only current theory of optional processes, but it also contains a spectrum of applications to stochastic differential equations, filtering theory and mathematical finance.

Features

  • Suitable for graduate students and researchers in mathematical finance, actuarial science, applied mathematics and related areas

  • Compiles almost all essential results on the calculus of optional processes in unusual probability spaces
  • Contains many advanced analytical results for stochastic differential equations and statistics pertaining to the calculus of optional processes
  • Develops new methods in finance based on optional processes such as a new portfolio theory, defaultable claim pricing mechanism, etc.
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chapter Chapter 1|27 pages

Spaces, Laws and Limits

chapter Chapter 2|60 pages

Stochastic Processes

chapter Chapter 3|50 pages

Martingales

chapter Chapter 4|19 pages

Strong Supermartingales

chapter Chapter 5|41 pages

Optional Martingales

chapter Chapter 6|14 pages

Optional Supermartingales Decomposition

chapter Chapter 7|28 pages

Calculus of Optional Semimartingales

chapter Chapter 8|38 pages

Optional Stochastic Equations

chapter Chapter 9|25 pages

Optional Financial Markets

chapter Chapter 10|18 pages

Defaultable Markets on Unusual Space

chapter Chapter 11|41 pages

Filtering of Optional Semimartingales