Correlation theorems related to the linear canonical transformation are established by using the relation between convolution and correlation definitions in the linear canonical transform domains.

A linear correlation coefficient that is greater than zero indicates a positive relationship. ... For example, when two stocks move in the same direction, the correlation coefficient is positive.

It's looking very likely that Friday will bring a fresh record high for U.S. stocks. And yet there are still signs of nervousness. Nicholas Colas, co-founder of DataTrek Research, a research boutique, ...

Del Tatto et al. developed a framework for determining causal links in molecular simulations. The framework uses two ...