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Option Prices as Probabilities: A New Look at Generalized Black-Scholes Formulae - Springer Finance Lecture Notes (Paperback)
  • Option Prices as Probabilities: A New Look at Generalized Black-Scholes Formulae - Springer Finance Lecture Notes (Paperback)
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Option Prices as Probabilities: A New Look at Generalized Black-Scholes Formulae - Springer Finance Lecture Notes (Paperback)

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Paperback 270 Pages / Published: 12/02/2010
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Discovered in the seventies, Black-Scholes formula continues to play a central role in Mathematical Finance. We recall this formula. Let (B ,t? 0; F ,t? 0, P) - t t note a standard Brownian motion with B = 0, (F ,t? 0) being its natural ?ltra- 0 t t tion. Let E := exp B? ,t? 0 denote the exponential martingale associated t t 2 to (B ,t? 0). This martingale, also called geometric Brownian motion, is a model t to describe the evolution of prices of a risky asset. Let, for every K? 0: + ? (t) :=E (K?E ) (0.1) K t and + C (t) :=E (E?K) (0.2) K t denote respectively the price of a European put, resp. of a European call, associated with this martingale. Let N be the cumulative distribution function of a reduced Gaussian variable: x 2 y 1 ? 2 ? N (x) := e dy. (0.3) 2? ?? The celebrated Black-Scholes formula gives an explicit expression of? (t) and K C (t) in terms ofN : K ? ? log(K) t log(K) t ? (t)= KN ? + ?N ? ? (0.4) K t 2 t 2 and ? ?

Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
ISBN: 9783642103940
Number of pages: 270
Weight: 450 g
Dimensions: 235 x 155 x 15 mm

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