##### Volume 01 (2012)
Linear and multilinear algebra; matrix theory
##### 1. On the square root of quadratic matrices

Volume 08, Issue 03 , Summer 2019, , Pages 211-214

##### Abstract
Here we present a new approach to calculating the square root of a quadratic matrix. Actually, the purpose of this article is to show how the Cayley-Hamilton theorem may be used to determine an explicit formula for all the square roots of $2\times 2$ matrices.  Read More

Difference and functional equations
##### 2. A note on unique solvability of the absolute value equation

T. Lotfi; H. Vieseh

Volume 02, Issue 02 , Spring 2013, , Pages 77-81

##### Abstract
It is proved that applying sufficient regularity conditions to the interval matrix $[A-|B|,A + |B|]$, we can create a new unique solvability condition for the absolute value equation $Ax + B|x|=b$, since regularity of interval matrices implies unique solvability of their corresponding absolute ...  Read More