Solving non-autonomous systems of ordinary differential equations leads to consider a new
product of bivariate distributions called the⋆ product in the literature. This product, distinct …

In quantum mechanics, the Rosen-Zener model represents a two-level quantum system. Its
generalization to multiple degenerate sets of states leads to larger non-autonomous linear …

While graph theory is a well established field of research in mathematics, there is no
dedicated theory for graph walks. In the present work we show that such a theory is not only …