2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/223159This paper was withdrawn by the author, Greg Marks. It has been superseded by joint work (in preparation) with Ryszard Mazurek.This paper has been withdrawnRings and Algebras16E50, 16L30, 16P70 (Primary); 16L60, 16N20, 16N40, 16P10, 16P20, 16P40 (Secondary)text