In this article,we discuss singular Hermitian matrices of rank greater or equal to four for an inverse eigenvalue problem.Specifically,we look into how to gener
The Ambartsumian equation is an application of the theory of surface brightness in the milky way. It is a linear differential equation involving a proportional
Problem of search of universal system of formalization the knowledge is discussed.Philisophical,mathematical,cybernetic and computing aspects of its problem are