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  • 26

    Days Read in a Row 2009-10-15

  • The Tagger 2009-04-11

  • The Contradictor 2009-04-11

  • Posted a Comment 2009-02-20

  • Had a Comment Modded Up 2009-04-09

  • 5

    Years Read 2013-04-04

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"