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Stochastic Flows and Stochastic Differential Equations

Stochastic Flows and Stochastic Differential Equations PDF Author: Hiroshi Kunita
Publisher: Cambridge University Press
ISBN: 9780521599252
Category : Mathematics
Languages : en
Pages : 364

Book Description
The main purpose of this book is to give a systematic treatment of the theory of stochastic differential equations and stochastic flow of diffeomorphisms, and through the former to study the properties of stochastic flows.The classical theory was initiated by K. Itô and since then has been much developed. Professor Kunita's approach here is to regard the stochastic differential equation as a dynamical system driven by a random vector field, including thereby Itô's theory as a special case. The book can be used with advanced courses on probability theory or for self-study.

Stochastic Flows and Stochastic Differential Equations

Stochastic Flows and Stochastic Differential Equations PDF Author: Hiroshi Kunita
Publisher: Cambridge University Press
ISBN: 9780521599252
Category : Mathematics
Languages : en
Pages : 364

Book Description
The main purpose of this book is to give a systematic treatment of the theory of stochastic differential equations and stochastic flow of diffeomorphisms, and through the former to study the properties of stochastic flows.The classical theory was initiated by K. Itô and since then has been much developed. Professor Kunita's approach here is to regard the stochastic differential equation as a dynamical system driven by a random vector field, including thereby Itô's theory as a special case. The book can be used with advanced courses on probability theory or for self-study.

Stochastic Flows and Jump-Diffusions

Stochastic Flows and Jump-Diffusions PDF Author: Hiroshi Kunita
Publisher: Springer
ISBN: 9811338019
Category : Mathematics
Languages : en
Pages : 352

Book Description
This monograph presents a modern treatment of (1) stochastic differential equations and (2) diffusion and jump-diffusion processes. The simultaneous treatment of diffusion processes and jump processes in this book is unique: Each chapter starts from continuous processes and then proceeds to processes with jumps.In the first part of the book, it is shown that solutions of stochastic differential equations define stochastic flows of diffeomorphisms. Then, the relation between stochastic flows and heat equations is discussed. The latter part investigates fundamental solutions of these heat equations (heat kernels) through the study of the Malliavin calculus. The author obtains smooth densities for transition functions of various types of diffusions and jump-diffusions and shows that these density functions are fundamental solutions for various types of heat equations and backward heat equations. Thus, in this book fundamental solutions for heat equations and backward heat equations are constructed independently of the theory of partial differential equations.Researchers and graduate student in probability theory will find this book very useful.

An Introduction to the Geometry of Stochastic Flows

An Introduction to the Geometry of Stochastic Flows PDF Author: Fabrice Baudoin
Publisher: World Scientific
ISBN: 1860944817
Category : Mathematics
Languages : en
Pages : 152

Book Description
This book aims to provide a self-contained introduction to the local geometry of the stochastic flows associated with stochastic differential equations. It stresses the view that the local geometry of any stochastic flow is determined very precisely and explicitly by a universal formula referred to as the Chen-Strichartz formula. The natural geometry associated with the Chen-Strichartz formula is the sub-Riemannian geometry whose main tools are introduced throughout the text. By using the connection between stochastic flows and partial differential equations, we apply this point of view of the study of hypoelliptic operators written in Hormander's form.

Measure-valued Processes and Stochastic Flows

Measure-valued Processes and Stochastic Flows PDF Author: Andrey A. Dorogovtsev
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110986515
Category : Mathematics
Languages : en
Pages : 228

Book Description


Stochastic Flows in the Brownian Web and Net

Stochastic Flows in the Brownian Web and Net PDF Author: Emmanuel Schertzer
Publisher: American Mathematical Soc.
ISBN: 0821890883
Category : Mathematics
Languages : en
Pages : 172

Book Description
It is known that certain one-dimensional nearest-neighbor random walks in i.i.d. random space-time environments have diffusive scaling limits. Here, in the continuum limit, the random environment is represented by a `stochastic flow of kernels', which is a collection of random kernels that can be loosely interpreted as the transition probabilities of a Markov process in a random environment. The theory of stochastic flows of kernels was first developed by Le Jan and Raimond, who showed that each such flow is characterized by its -point motions. The authors' work focuses on a class of stochastic flows of kernels with Brownian -point motions which, after their inventors, will be called Howitt-Warren flows. The authors' main result gives a graphical construction of general Howitt-Warren flows, where the underlying random environment takes on the form of a suitably marked Brownian web. This extends earlier work of Howitt and Warren who showed that a special case, the so-called "erosion flow", can be constructed from two coupled "sticky Brownian webs". The authors' construction for general Howitt-Warren flows is based on a Poisson marking procedure developed by Newman, Ravishankar and Schertzer for the Brownian web. Alternatively, the authors show that a special subclass of the Howitt-Warren flows can be constructed as random flows of mass in a Brownian net, introduced by Sun and Swart. Using these constructions, the authors prove some new results for the Howitt-Warren flows.

Constructing Nonhomeomorphic Stochastic Flows

Constructing Nonhomeomorphic Stochastic Flows PDF Author: R. W. R. Darling
Publisher: American Mathematical Soc.
ISBN: 0821824392
Category : Mathematics
Languages : en
Pages : 109

Book Description
The purpose of this article is the construction of stochastic flows from the finite-dimensional distributions without any smoothness assumptions. Also examines the relation between covariance functions and finite-dimensional distributions. The stochastic continuity of stochastic flows in the time parameter are proved in each section. These results give some extensions of the results obtained by Harris, by Baxendale and Harris and by other authors. In particular, the author studies coalescing flows, which were introduced by Harris for the study of flows of nonsmooth maps.

On the Geometry of Diffusion Operators and Stochastic Flows

On the Geometry of Diffusion Operators and Stochastic Flows PDF Author: K.D. Elworthy
Publisher: Springer
ISBN: 3540470220
Category : Mathematics
Languages : en
Pages : 121

Book Description
Stochastic differential equations, and Hoermander form representations of diffusion operators, can determine a linear connection associated to the underlying (sub)-Riemannian structure. This is systematically described, together with its invariants, and then exploited to discuss qualitative properties of stochastic flows, and analysis on path spaces of compact manifolds with diffusion measures. This should be useful to stochastic analysts, especially those with interests in stochastic flows, infinite dimensional analysis, or geometric analysis, and also to researchers in sub-Riemannian geometry. A basic background in differential geometry is assumed, but the construction of the connections is very direct and itself gives an intuitive and concrete introduction. Knowledge of stochastic analysis is also assumed for later chapters.

An Introduction To The Geometry Of Stochastic Flows

An Introduction To The Geometry Of Stochastic Flows PDF Author: Fabrice Baudoin
Publisher: World Scientific
ISBN: 1783260580
Category : Mathematics
Languages : en
Pages : 152

Book Description
This book aims to provide a self-contained introduction to the local geometry of the stochastic flows. It studies the hypoelliptic operators, which are written in Hörmander's form, by using the connection between stochastic flows and partial differential equations.The book stresses the author's view that the local geometry of any stochastic flow is determined very precisely and explicitly by a universal formula referred to as the Chen-Strichartz formula. The natural geometry associated with the Chen-Strichartz formula is the sub-Riemannian geometry, and its main tools are introduced throughout the text./a

Lectures on Stochastic Flows and Applications

Lectures on Stochastic Flows and Applications PDF Author: H. Kunita
Publisher:
ISBN:
Category : Flows (Differentiable dynamical systems).
Languages : en
Pages : 184

Book Description


Stochastic Methods for Flow in Porous Media

Stochastic Methods for Flow in Porous Media PDF Author: Dongxiao Zhang
Publisher: Elsevier
ISBN: 0080517773
Category : Mathematics
Languages : en
Pages : 371

Book Description
Stochastic Methods for Flow in Porous Media: Coping with Uncertainties explores fluid flow in complex geologic environments. The parameterization of uncertainty into flow models is important for managing water resources, preserving subsurface water quality, storing energy and wastes, and improving the safety and economics of extracting subsurface mineral and energy resources. This volume systematically introduces a number of stochastic methods used by researchers in the community in a tutorial way and presents methodologies for spatially and temporally stationary as well as nonstationary flows. The author compiles a number of well-known results and useful formulae and includes exercises at the end of each chapter. Balanced viewpoint of several stochastic methods, including Greens' function, perturbative expansion, spectral, Feynman diagram, adjoint state, Monte Carlo simulation, and renormalization group methods Tutorial style of presentation will facilitate use by readers without a prior in-depth knowledge of Stochastic processes Practical examples throughout the text Exercises at the end of each chapter reinforce specific concepts and techniques For the reader who is interested in hands-on experience, a number of computer codes are included and discussed