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In the modern economic world, the options contracts are used because they allow to hedge against the vagaries and risks refers to fluctuations in the prices of the underlying assets.
The determination of the price of these contracts is of great importance for investors.We are interested in problems of options pricing, actually the European and Quanto options on a financial asset.
The price of that asset is modeled by a multi-dimentional jump diffusion with stochastic volatility.
Otherwise, the first model considers the volatility as a continuous process and the second model considers it as a jump process.
Finally in the 3rd model, the underlying asset is without jump and volatility follows a model CEV without jump.
This model allow better to take into account some phenomena observed in the markets.
We develop numerical methods that determine the values of prices for these options.
We first write the model as an integro-differential stochastic equations system "EIDS", of which we study existence and unicity of solutions.
Then we relate the resolution of PIDE to the computation of the option value.
Abdelilah Jraifi, Professor of Higher Education Assistant at ENSA Safi, Morocco., Doctor in Applied Mathematics in Finance of University Mohammed V-Agdal, Mohammedia Engineering School and of University of Valenciennes and Hainaut Cambresis.
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