current community blog chat Mathematics Mathematics Meta Sign up or log in to customize your list. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Mathematics Questions Tags Users Badges Unanswered Ask Question Sign up × Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required. Why are rings called rings? up vote 102 down vote favorite 44 I've done some search in Internet and other sources about this question. Wh...