JP Journal of Algebra, Number Theory and Applications, cilt.21, sa.1, ss.57-67, 2011 (ESCI)
In this work, the Euler's and De-Moivre's formulas for the matrices associated with quaternions are studied. It is shown that as the De- Moivre's formula implies, there are uncountably many matrices of unit quaternion satisfying An = I4 for n ≥ 3. © 2011 Pushpa Publishing House.