Critical exponents: old and new
Charles R. Johnson, Olivia Walch · Electronic Journal of Linear Algebra · 2012
For Hadamard and conventional powering, we survey past and current work on the existence and values of critical exponents (CEs) for such matrix classes as doubly nonnegative, totally positive, M- and inverse M-matrices. There are remarkable similarities and differences between Hadamard and conventional CEs for the various classes.