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Aug 2, 2021 at 1:28 vote accept Bertrand87
Aug 1, 2021 at 18:53 answer added Gary timeline score: 2
Aug 1, 2021 at 18:34 history edited Bertrand87 CC BY-SA 4.0
added 3 characters in body
Aug 1, 2021 at 18:31 comment added Bertrand87 If someone has a hint about the proof
Aug 1, 2021 at 18:29 comment added Gary What is the question?
Aug 1, 2021 at 18:26 history edited Bertrand87 CC BY-SA 4.0
edited body
Aug 1, 2021 at 18:12 history asked Bertrand87 CC BY-SA 4.0