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when toggle format what by license comment
Jun 27, 2014 at 16:19 vote accept dr.blochwave
Jun 27, 2014 at 13:39 vote accept dr.blochwave
Jun 27, 2014 at 14:32
Jun 27, 2014 at 13:36 comment added dr.blochwave Thanks for your answer - as @acl has pointed out I managed to miss of a somewhat crucial piece of information regarding $z$ (now added), for which I must apologise.
Jun 27, 2014 at 13:34 history answered Alexei Boulbitch CC BY-SA 3.0