In whatever search engine you prefer – hopefully not Google – enter this into the search box and click to Search
site:engadget.com “After Math”
The editor of Engadget has to mean that the article is discussing something as a result of a mathematical exercise. “After Math” means “Something that happens following Math” (or as everyone else would say ‘Maths’)
Or does the editor mean “Aftermath” ?
If the latter, sack the existing editor.