The QR method is a very eecient method for computing the spectrum of Hermitian tridiagonal matrices since the tridiagonal form is preserved over the iterations. For non-Hermitian tridiagonal matrices the QR method destroys the tridiagonal form. In this report we study two methods, the HR and the XHR methods, that preserve tridiagonal form for pseudo-Hermitian matrices. We also report results fr...

The aim of the article is to analyze current technologies trends in field personnel management. introduction digital activities enterprises different countries world has been analyzed. A comparative analysis traditional and allowed determine effectiveness latter conducted. Modern HR management have distinguished. SWOT-analysis digitalization staff processes at which prospects for further using ...