Introduction to Stochastic Integration - Kai L. Chung

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Auteur(s) : Kai L. Chung - Ruth J. Williams

Editeur : Springer Us, New York, N.Y.

Langue : Anglais

Parution : 01/09/2011

Format : Moyen, de 350g à 1kg

Nombre de pages : 296

Expédition : 452

Dimensions : 23.5 x 15.5 x 1.7

ISBN : 1461288371

Résumé :

A highly readable introduction to stochastic integration and stochastic differential equations, this book combines developments of the basic theory with applications. It is written in a style suitable for the text of a graduate course in stochastic calculus, following a course in probability.

Using the modern approach, the stochastic integral is defined for predictable integrands and local martingales; then It?'s change of variable formula is developed for continuous martingales. Applications include a characterization of Brownian motion, Hermite polynomials of martingales, the Feynman-Kac functional and Schr?dinger equation. For Brownian motion, the topics of local time, reflected Brownian motion, and time change are discussed.

New to the second edition are a discussion of the Cameron-Martin-Girsanov transformation and a final chapter which provides an introduction to stochastic differential equations, as well as many exercises for classroom use.

This book will be a valuable resource to all mathematicians, statisticians, economists, and engineers employing the modern tools of stochastic analysis.

The text also proves that stochastic integration has made an important impact on mathematical progress over the last decades and that stochastic calculus has become one of the most powerful tools in modern probability theory.

-Journal of the American Statistical Association

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An attractive text...written in [a] lean and precise style...eminently readable. Especially pleasant are the care and attention devoted to details... A very fine book.

-Mathematical Reviews

Sommaire:
1. Preliminaries.- 1.1 Notations and Conventions.- 1.2 Measurability, LP Spaces and Monotone Class Theorems.- 1.3 Functions of Bounded Variation and Stieltjes Integrals.- 1.4 Probability Space, Random Variables, Filtration.- 1.5 Convergence, Conditioning.- 1.6 Stochastic Processes.- 1.7 Optional Times.- 1.8 Two Canonical Processes.- 1.9 Martingales.- 1.10 Local Martingales.- 1.11 Exercises.- 2. Definition of the Stochastic Integral.- 2.1 Introduction.- 2.2 Predictable Sets and Processes.- 2.3 Stochastic Intervals.- 2.4 Measure on the Predictable Sets.- 2.5 Definition of the Stochastic Integral.- 2.6 Extension to Local Integrators and Integrands.- 2.7 Substitution Formula.- 2.8 A Sufficient Condition for Extendability of ?z.- 2.9 Exercises.- 3. Extension of the Predictable Integrands.- 3.1 Introduction.- 3.2 Relationship between P, O,and Adapted Processes.- 3.3 Extension of the Integrands.- 3.4 A Historical Note.- 3.5 Exercises.- 4. Quadratic Variation Process.- 4.1 Introduction.- 4.2 Definition and Characterization of Quadratic Variation.- 4.3 Properties of Quadratic Variation for an L2-martingale.- 4.4 Direct Definition of ?M.- 4.5 Decomposition of (M)2.- 4.6 A Limit Theorem.- 4.7 Exercises.- 5. The Ito Formula.- 5.1 Introduction.- 5.2 One-dimensional It? Formula.- 5.3 Mutual Variation Process.- 5.4 Multi-dimensional It? Formula.- 5.5 Exercises.- 6. Applications of the Ito Formula.- 6.1 Characterization of Brownian Motion.- 6.2 Exponential Processes.- 6.3 A Family of Martingales Generated by M.- 6.4 Feynman-Kac Functional and the Schr?dinger Equation.- 6.5 Exercises.- 7. Local Time and Tanaka's Formula.- 7.1 Introduction.- 7.2 Local Time.- 7.3 Tanaka's Formula.- 7.4 Proof of Lemma 7.2.- 7.5 Exercises.- 8. Reflected Brownian Motions.- 8.1 Introduction.- 8.2Brownian Motion Reflected at Zero.- 8.3 Analytical Theory of Z via the It? Formula.- 8.4 Approximations in Storage Theory.- 8.5 Reflected Brownian Motions in a Wedge.- 8.6 Alternative Derivation of Equation (8.7).- 8.7 Exercises.- 9. Generalized Ito Formula, Change of Time and Measure.- 9.1 Introduction.- 9.2 Generalized It? Formula.- 9.3 Change of Time.- 9.4 Change of Measure.- 9.5 Exercises.- 10. Stochastic Differential Equations.- 10.1 Introduction.- 10.2 Existence and Uniqueness for Lipschitz Coefficients.- 10.3 Strong Markov Property of the Solution.- 10.4 Strong and Weak Solutions.- 10.5 Examples.- 10.6 Exercises.- References.