Before revision:  The results establish a simple link between the decay exponent of the density function and the price adjustment function, a feature that can improve methodology for risk assessment  .
After revision:  The results establish a simple link between the decay exponent of the density function and the price adjustment function, a feature that can improve methodology for risk assessment . The mathematical results can be applied to other problems involving the relative difference or quotient of Levy processes of jump-diffusion type .