${}^{\omega+m}\omega=\sup ({}^{n+m}\omega|n \in \Bbb{N},m \in \Bbb{N}\textrm{ fixed})=\sup(\omega,{}^{1+m}\omega,{}^{2+m}\omega,{}^{3+m}\omega,...)=\epsilon_0$
${}^{m+\omega}\omega=\sup ({}^{m+n}\omega|n \in \Bbb{N},m \in \Bbb{N}\textrm{ fixed})=\sup(\omega,{}^{m+1}\omega,{}^{2+m}\omega,{}^{3+m}\omega,...)=\epsilon_0$
${}^{\omega 2}\omega=\sup ({}^{n 2}\omega|n \in \Bbb{N})=\sup(1,{}^2\omega,{}^4\omega,{}^6\omega,...)=\epsilon_0$
${}^{\omega^2}\omega=\sup ({}^{n^2}\omega|n \in \Bbb{N})=\sup(1,\omega,{}^4\omega,{}^9\omega,...)=\epsilon_0$