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  • Got a Score:5 Comment 2012-11-24

  • 22

    Days Read in a Row 2012-08-09

  • Posted a Comment 2012-05-26

  • Had a Comment Modded Up 2012-10-05

What are these achievement things?

We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"