Characterization and uniqueness of $σ$-Antisets

Ivan Gatica Araus

Published 2009-06-25, updated 2009-07-23Version 2

In this article, we prove that if there exists a $\sigma$-antiset $X^{*}$, of a $\sigma$-set $X$, then it is unique and therefore we can present a characterization of the $\sigma$-antiset.