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6.Results European call option pricing formula and put-call parity were obtained considering the price of stock dividends-payment and a jump-diffusion process.
8.Under the assumption condition of Black-Scholes formula ,use the theory of martingales and stopping time,get the conclusion that: the price of America call option equals the price of European call option;
9.On the basis of the theory of option pricing,We study the connection between America call option and European call option;


