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when toggle format what by license comment
May 2, 2018 at 5:14 comment added Artem Dear @YCor, thank you for the clear answer. The proof is really easy!
May 2, 2018 at 5:12 vote accept Artem
May 2, 2018 at 5:11 vote accept Artem
May 2, 2018 at 5:11
Apr 29, 2018 at 14:26 history edited YCor CC BY-SA 3.0
fixed typo and added comments
Apr 29, 2018 at 13:19 history answered YCor CC BY-SA 3.0