An element  is known a strongly nil* clean element if a=e1 - e1e2 + n . where e1. e2  are idempotents and n is nilpotent. that commute with one another. https://www.spidertattooz.com/OPI-GelColor-The-Color-That-Keeps-On-Giving-0-5-oz-HPJ07-p22791/