  This paper studies the pricing and hedging of derivatives in frictionless and
competitive, but incomplete jump-diffusion markets. A unique equivalent
martingale measure (EMM) is obtained using filtration reduction to a fictitious
complete market. This unique EMM in the fictitious market is uplifted to the
original economy using the notion of consistency. For pedagogical purposes, we
begin with simple setups and progressively extend to models of increasing
generality.
