On The Para-Octonions; a Non-Associative Normed Algebra

In this paper, para-octonions and their algebraic properties are provided by using the Cayley-Dickson multiplication rule between the octonionic basis elements. The trigonometric form of a para-octonion is similar to the trigonometric form of dual number and quasi-quaternion. We study the De-Moivre’s theorem for para-octonions, extending results obtained for real octonions and defining generalize Euler’s formula for para-octonions.