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  • Got a Score:5 Comment 2013-08-13

  • 24

    Days Read in a Row 2010-07-16

  • Posted a Comment 2010-03-02

  • Had a Comment Modded Up 2010-07-10

  • 5

    Years Read 2015-12-10

  • Spent All My Mod Points 2010-07-25

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"