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In economic situations where action entails a fixed cost, inaction is the norm. Action is taken infrequently, and adjustments are large when they occur. Interest in economic models that exhibit ''lumpy'' behavior of this kind has exploded in recent years, spurred by growing evidence that it is typical in many important economic decisions, including price setting, investment, hiring, durable goods purchases, and portfolio management. In The Economics of Inaction, leading economist Nancy Stokey shows how the tools of stochastic control can be applied to dynamic problems of decision making under uncertainty when fixed costs are present. Stokey provides a self-contained, rigorous, and clear treatment of two types of models, impulse and instantaneous control. She presents the relevant results about Brownian motion and other diffusion processes, develops methods for analyzing each type of problem, and discusses applications to price setting, investment, and durable goods purchases. This authoritative book will be essential reading for graduate students and researchers in macroeconomics.
Modèles économétriques --- Mouvement brownien --- AA / International- internationaal --- 305.970 --- 305.971 --- Econometric models --- Brownian movements --- 330.01519233 --- Capillarity --- Liquids --- Matter --- Econometrics --- Mathematical models --- Algemeenheden: Autoregression and moving average representation. ARIMA. ARMAX. Lagrange multiplier. Wald. Function (mis) specification. Autocorrelation. Homoscedasticity. Heteroscedasticity. ARCH. GARCH. Integration and co-integration. Unit roots. --- Speciale gevallen in econometrische modelbouw. --- Properties --- Econometric models. --- Brownian movements. --- E-books --- Modèles économétriques. --- Mouvement brownien. --- Algemeenheden: Autoregression and moving average representation. ARIMA. ARMAX. Lagrange multiplier. Wald. Function (mis) specification. Autocorrelation. Homoscedasticity. Heteroscedasticity. ARCH. GARCH. Integration and co-integration. Unit roots --- Speciale gevallen in econometrische modelbouw
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The scientific debate of recent years about option pricing with respect to fractional Brownian motion was focused on the feasibility of the no arbitrage pricing approach. As the unrestricted fractional market setting allows for arbitrage, the conventional reasoning is that fractional Brownian motion does not qualify for modeling price process. In this book, the author points out that arbitrage can only be excluded in case that market prices move at least slightly faster than any market participant can react. He clarifies that continuous tradability always eliminates the risk of the fractional price process, irrespective of the interpretation of the stochastic integral as an integral of Stratonovich or Itô type. Being left with an incomplete market setting, the author shows that option valuation with respect to fractional Brownian motion may be solved by applying a risk preference based approach. The latter provides us with an intuitive closed-form solution for European options within the fractional context.
Brownian motion processes. --- Business mathematics -- Congresses. --- Business mathematics. --- Options (Finance) -- Prices -- Mathematical models. --- Mathematics --- Physical Sciences & Mathematics --- Mathematical Statistics --- Brownian motion processes --- -Options (Finance) --- -519.233 --- 332.6453 --- Call options --- Calls (Finance) --- Listed options --- Options exchange --- Options market --- Options trading --- Put and call transactions --- Put options --- Puts (Finance) --- Derivative securities --- Investments --- Wiener processes --- Brownian movements --- Fluctuations (Physics) --- Markov processes --- Electronic information resources --- Prices --- -Mathematical models --- -Electronic information resources --- E-books --- Options (Finance) --- Mathematical models. --- Finance. --- Economics, Mathematical. --- Macroeconomics. --- Finance, general. --- Macroeconomics/Monetary Economics//Financial Economics. --- Quantitative Finance. --- Economics --- Funding --- Funds --- Currency question --- Economics, Mathematical . --- Mathematical economics --- Econometrics --- Methodology --- AA / International- internationaal --- 305.91 --- 305.6 --- Econometrie van de financiële activa. Portfolio allocation en management. CAPM. Bubbles --- Risicotheorie, speltheorie. Risicokapitaal. Beslissingsmodellen --- Social sciences --- Financial Economics. --- Macroeconomics and Monetary Economics. --- Mathematics in Business, Economics and Finance. --- Mathematics.
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