Dow Jones Gaussian watermarks Laplace and Fourier transform Lévy measure Mittag-Leffler functions PMSM Poisson process of order k Skellam process Wright functions bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general bic Book Industry Communication::P Mathematics & science big data chaos complex systems complexity continuous time random walk continuous time random walks control theory diffusion-wave equation distributed-order operators diversity entropy false positive rate financial indices fractals fractional PINN fractional Poisson process complex systems fractional calculus fractional conservations laws fractional diffusion