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Dec 6 at 12:02 history bumped CommunityBot This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
Aug 8 at 12:01 history bumped CommunityBot This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
Jul 9 at 11:23 answer added Fedor Petrov timeline score: 0
Jul 9 at 9:42 comment added White Cat @FedorPetrov yes
Jul 9 at 9:39 comment added Fedor Petrov Is $i$ here a square root of $-1$?
S Jul 9 at 9:09 review First questions
Jul 9 at 10:10
S Jul 9 at 9:09 history asked White Cat CC BY-SA 4.0