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when toggle format what by license comment
May 24, 2016 at 2:40 vote accept Hayabusananji
May 10, 2016 at 14:21 history edited Anthony Quas CC BY-SA 3.0
added 3 characters in body
May 10, 2016 at 14:20 comment added Anthony Quas Yes. I guess so. (editing answer).
May 10, 2016 at 9:05 comment added Dirk Can't some eigenvalues of $M$ be zero?
May 10, 2016 at 5:58 history answered Anthony Quas CC BY-SA 3.0