College Math Teaching

April 9, 2015

I’d be a better mathematician if I weren’t so freaking dumb!!!!

Filed under: academia, editorial — Tags: — collegemathteaching @ 7:45 pm

I have some time to think about things, and I got hung up on a detail…and the resolution of said detail was realizing, that if f is a bijection (one to one and onto), then (f^{-1})^{-1} = f .

ARRRGGGHHHHH!!!!!!!!!!!!

Back to work.

1 Comment »

  1. […] I worked on some…and was anguished at the elementary mistakes I made. Now if you want to see some of what world class mathematicians work on, read this. This is a […]

    Pingback by Math, abs and bench presses « blueollie — April 10, 2015 @ 1:01 am

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