A matrix generalization of Euler identity e^(ix) = cosx + i sinx
Abstract
Description
In this work we present a matrix generalization of the Euler identity about exponential representation of a complex number. The concept of matrix exponential is used in a fundamental way. We define a notion of matrix imaginary unit which generalizes the usual complex imaginary unit. The Euler-like identity so obtained is compatible with the classical one. Also, we derive some exponential representation for matrix real and imaginary unit, and for the first Pauli matrix.
5 pages, research work done at R&D Dept. of Company Institution
5 pages, research work done at R&D Dept. of Company Institution