It starts with a slow introduction to vectors, applications of vectors, complex numbers before diving into matrices, lines and planes, and calculus. If you are struggling at the start, I highly recommend going over the Chapter 1 material which covers basic sets, elements, intervals, absolute ...
This article does bibliometric analysis and creates data matrices for co-citation, coupling, scientific collaboration analysis, and co-word analysis on electronic invoicing using the science mapping technique and the Bibliometrix R-package. The rest of this study is structured as follows. In part II...