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Sep 27, 2021 at 13:44 comment added River Li It is a nice identity. By the way, using SOS (Sum of Squares) solver in Yalmip, it is easy to get the same identity.
Jun 23, 2020 at 17:06 comment added Aditya Guha Roy This is amazing arqady sir. Your work gives inspiration.
Apr 21, 2020 at 18:47 history edited Michael Rozenberg CC BY-SA 4.0
added 1967 characters in body
Apr 21, 2020 at 18:40 history edited Michael Rozenberg CC BY-SA 4.0
added 1967 characters in body
Apr 21, 2020 at 13:01 comment added Iosif Pinelis Yes, I'd certainly like to see how this identity was found.
Apr 21, 2020 at 7:59 history undeleted Michael Rozenberg
Apr 21, 2020 at 7:59 history edited Michael Rozenberg CC BY-SA 4.0
added 353 characters in body
Apr 21, 2020 at 5:00 history edited Michael Rozenberg CC BY-SA 4.0
deleted 334 characters in body
Apr 21, 2020 at 4:56 history deleted Michael Rozenberg via Vote
Apr 21, 2020 at 2:11 history edited Michael Rozenberg CC BY-SA 4.0
added 4 characters in body
Apr 21, 2020 at 1:10 history answered Michael Rozenberg CC BY-SA 4.0