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| Name | Proof: Identity Element of a Group is Unique | Abstract Algebra |
| Video Uploader | Video From Wrath of Math |
| Upload Date | This Video Uploaded At 01-12-2019 12:30:02 |
| Video Discription | The identity element of a group is unique. We prove this ins today’s video abstract algebra lesson. This is one of the first results you’re likely to prove in an abstract algebra course. It is simple but fundamental, and lets us rest easy knowing something we’d like to be true is indeed true. We prove the result directly. Let e and f be identities of the group (G, *). Then e*f = e by definition of identity and e*f = f by definition of identity. Hence, e = f and the identity is unique. We see that when we give two different names to identities of a group, we are actually naming the same element twice, the unique identity element of the group! I hope you find this video helpful, and be sure to ask any questions down in the comments! ******************************************************************** The outro music is by a favorite musician of mine named Vallow, who, upon my request, kindly gave me permission to use his music in my outros. I usually put my own music in the outros, but I love Vallow's music, and wanted to share it with those of you watching. Please check out all of his wonderful work. Vallow Bandcamp: https://vallow.bandcamp.com/ Vallow Spotify: https://open.spotify.com/artist/0fRtulS8R2Sr0nkRLJJ6eW Vallow SoundCloud: https://soundcloud.com/benwatts-3 ******************************************************************** +WRATH OF MATH+ ◆ Support Wrath of Math on Patreon: https://www.patreon.com/wrathofmathlessons Follow Wrath of Math on... ● Instagram: https://www.instagram.com/wrathofmathedu ● Facebook: https://www.facebook.com/WrathofMath ● Twitter: https://twitter.com/wrathofmathedu My Music Channel: http://www.youtube.com/seanemusic |
| Category | Education |
| Tags | wrath of math | math lessons | math | education | math video | abstract algebra | identity of a group is unique | group identity element is unique | abstract algebra proof identity is unique |
