Diagonalisation of a matrix is the process of reduction of a matrix to diagonal form. The process of reduction of a matrix to diagonal form is as follows: A square matrix of order n with n linearly ...

Now we define a new class called `Diag`, this class receive a container that can be the parameter of `std::data`, e.g `std::vector`, `std::initializer_list`. This class is for specify a diagonal ...

Abstract Let A be an n × n Hermitian matrix and A = UΛUH be its spectral decomposition, where U is a unitary matrix of order n and Λ is a diagonal matrix. In this note we present the perturbation ...