User blog comment:Rgetar/Idea of program/@comment-80.98.179.160-20171224180551/@comment-80.98.179.160-20180126100609

True. But ωε0+ω[0]=ωε0.

So we mustn't write in that way, but instead as ε0ωω as the 0th element of that, despite same, at least is normal form.