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Dec 10 at 13:47 answer added Georg Essl timeline score: 2
Dec 8 at 13:16 vote accept Calmarius
Apr 9, 2016 at 17:31 answer added Alexandre Eremenko timeline score: 8
Apr 9, 2016 at 17:15 comment added Alexandre Eremenko A relevant discussion is here: hsm.stackexchange.com/questions/198/…
Apr 9, 2016 at 17:14 comment added Alexandre Eremenko It existed but was not widely known. Bra and ket were introduced for a convenient distinction of row vectors and column vectors. In another language they are called vectors and co-vectors. It was gradually understood that this distinction is very important and physicists made great contribution to this understanding.
Apr 9, 2016 at 16:20 comment added Calmarius @AlexandreEremenko So does this mean that the usual notation of vectors and matrices we use today not existed that time? I can accept that as an answer.
Apr 9, 2016 at 13:46 review Close votes
May 6, 2016 at 3:00
Apr 9, 2016 at 13:30 comment added Alexandre Eremenko It is not "like linear algebra" but it is exactly linear algebra. At the time of Dirac linear algebra was not taught to all undergraduates. So he invented his own notation. Physicists found them convenient for the questions they consider.
Apr 9, 2016 at 10:15 review First posts
Apr 10, 2016 at 16:46
Apr 9, 2016 at 10:13 history asked Calmarius CC BY-SA 3.0