... s)ds. (9)Writing (3) in integrated form, we obtainf(t, s)=f(0,s)+t0α(u, s)du+t0σ(u, s)dWu+t0Eδ(u, x, s)µ(du, dx).Inserting this expression into (9), splitting the integrals ... challenging mathematical problems arising in the theoryof financial markets concerns market completeness, i.e. the possibility ofduplicating a contingent claim by a self-financing portfolio. Informally,such ... risky assets availablefor hedging as there are independent sources of randomness in the market. In bond markets as well as in stock markets it seems reasonable totake into account the possible occurrence...