The Economics of Continuous-Time Finance (The MIT Press)

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Description

An introduction to economic applications of the theory of continuous-time finance that strikes a balance between mathematical rigor and economic interpretation of financial market regularities.

This book introduces the economic applications of the theory of continuous-time finance, with the goal of enabling the construction of realistic models, particularly those involving incomplete markets. Indeed, most latest applications of continuous-time finance aim to capture the imperfections and dysfunctions of financial markets — characteristics that became especially apparent right through the market turmoil that began in 2008.

The book begins by the use of discrete time to illustrate the basic mechanisms and introduce such notions as completeness, redundant pricing, and no arbitrage. It develops the continuous-time analog of those mechanisms and introduces the powerful tools of stochastic calculus. Going beyond other textbooks, the book then specializes in the study of markets in which some form of incompleteness, volatility, heterogeneity, friction, or behavioral subtlety arises. After presenting solutions methods for regulate problems and related partial differential equations, the text examines portfolio optimization and equilibrium in incomplete markets, interest rate and fixed-source of revenue modeling, and stochastic volatility. In spite of everything, it presents models where investors form different beliefs or suffer frictions, form habits, or have recursive utilities, studying the effects not only on optimal portfolio choices but also on equilibrium, or the cost of primitive securities. The book strikes a balance between mathematical rigor and the need for economic interpretation of financial market regularities, even if with an emphasis on the latter.

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