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In this video, we introduce the structure in abstract algebra called rings, and prove why negative times negative equals positive in the framework of ring theory. Chapters: 00:00 Intro 01:19 Short Answer 02:03 Definition of a Ring 06:02 Examples 08:53 Proof 12:31 Outro 🎵Music provided by Causmic 🎵Track : Soul Searching - https://youtu.be/4LoDBdvGDBc