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when toggle format what by license comment
Feb 7, 2016 at 23:53 history edited Tsemo Aristide CC BY-SA 3.0
added 8 characters in body
Feb 7, 2016 at 18:25 comment added abx Not if $b_2=1$ ...
Feb 7, 2016 at 17:52 history answered Tsemo Aristide CC BY-SA 3.0