Books on linear models and multivariate analysis generally include a chapter on matrix algebra, quite rightly so, as matrix results are used in the discussion of statistical methods in these areas.

Journal of Economics, Vol. 84, No. 1 (February 2005), pp. 71-94 (24 pages) Economic systems often are described in matrix form as x = Mx. We present a new theorem for systems of this type where M is ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...