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by Carlos A. Braumann (Author)
About the Author
CARLOS A. BRAUMANN is Professor in the Department of Mathematics and member of the Research Centre in Mathematics and Applications, Universidade de évora, Portugal. He is an elected member of the International Statistical Institute (since 1992), a former President of the European Society for Mathematical and Theoretical Biology (2009-12) and of the Portuguese Statistical Society (2006-09 and 2009-12), and a former member of the European Regional Committee of the Bernoulli Society (2008-12). He has dealt with stochastic differential equation (SDE) models and applications (mainly biological).
About this book
A comprehensive introduction to the core issues of stochastic differential equations and their effective application
Introduction to Stochastic Differential Equations with Applications to Modelling in Biology and Finance offers a comprehensive examination to the most important issues of stochastic differential equations and their applications. The author — a noted expert in the field — includes myriad illustrative examples in modelling dynamical phenomena subject to randomness, mainly in biology, bioeconomics and finance, that clearly demonstrate the usefulness of stochastic differential equations in these and many other areas of science and technology.
The text also features real-life situations with experimental data, thus covering topics such as Monte Carlo simulation and statistical issues of estimation, model choice and prediction. The book includes the basic theory of option pricing and its effective application using real-life. The important issue of which stochastic calculus, Itô or Stratonovich, should be used in applications is dealt with and the associated controversy resolved. Written to be accessible for both mathematically advanced readers and those with a basic understanding, the text offers a wealth of exercises and examples of application. This important volume:
- Contains a complete introduction to the basic issues of stochastic differential equations and their effective application
- Includes many examples in modelling, mainly from the biology and finance fields
- Shows how to: Translate the physical dynamical phenomenon to mathematical models and back, apply with real data, use the models to study different scenarios and understand the effect of human interventions
- Conveys the intuition behind the theoretical concepts
- Presents exercises that are designed to enhance understanding
- Offers a supporting website that features solutions to exercises and R code for algorithm implementation
Brief contents
1 Introduction 1
2 Revision of probability and stochastic processes 9
2.1 Revision of probabilistic concepts 9
2.2 Monte Carlo simulation of random variables 25
2.3 Conditional expectations, conditional probabilities, and independence 29
2.4 A brief review of stochastic processes 35
2.5 A brief review of stationary processes 40
2.6 Filtrations, martingales, and Markov times 41
2.7 Markov processes 45
3 An informal introduction to stochastic differential equations 51
4 TheWiener process
4.1 Definition 57
4.2 Main properties 59
4.3 Some analytical properties 62
4.4 First passage times 64
4.5 MultidimensionalWiener processes 66
5 Diffusion processes 67
5.1 Definition 67
5.2 Kolmogorov equations 69
5.3 Multidimensional case 73
6 Stochastic integrals 75
6.1 Informal definition of the Itô and Stratonovich integrals 75
6.2 Construction of the Itô integral 79
6.3 Study of the integral as a function of the upper limit of integration 88
6.4 Extension of the Itô integral 91
6.5 Itô theorem and Itô formula 94
6.6 The calculi of Itô and Stratonovich 100
6.7 The multidimensional integral 104
7 Stochastic differential equations 107
7.1 Existence and uniqueness theorem and main proprieties of the solution 107
7.2 Proof of the existence and uniqueness theorem 111
7.3 Observations and extensions to the existence and uniqueness theorem 118
8 Study of geometric Brownian motion (the stochastic Malthusian model or Black–Scholesmodel) 123
8.1 Study using Itô calculus 123
8.2 Study using Stratonovich calculus 132
9 The issue of the Itô and Stratonovich calculi 135
9.1 Controversy 135
9.2 Resolution of the controversy for the particular model 137
9.3 Resolution of the controversy for general autonomous models 139
10 Study of some functionals 143
10.1 Dynkin’s formula 143
10.2 Feynman–Kac formula 146
11 Introduction to the study of unidimensional Itô diffusions 149
11.1 The Ornstein–Uhlenbeck process and the Vasicek model 149
11.2 First exit time from an interval 153
11.3 Boundary behaviour of Itô diffusions, stationary densities, and first passage times 160
12 Some biological and financial applications 169
12.1 The Vasicek model and some applications 169
12.2 Monte Carlo simulation, estimation and prediction issues 172
12.3 Some applications in population dynamics 179
12.4 Some applications in fisheries 192
12.5 An application in human mortality rates 201
13 Girsanov’s theorem 209
13.1 Introduction through an example 209
13.2 Girsanov’s theorem 213
14 Options and the Black–Scholes formula 219
14.1 Introduction 219
14.2 The Black–Scholes formula and hedging strategy 226
14.3 A numerical example and the Greeks 231
14.4 The Black–Scholes formula via Girsanov’s theorem 236
14.5 Binomial model 241
14.6 European put options 248
14.7 American options 251
14.8 Other models 253
15 Synthesis 259
References 269
Index 277
Pages: 304 pages
Publisher: Wiley; 1 edition (April 29, 2019)
Language: English
ISBN-10: 1119166063
ISBN-13: 978-1119166061
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