Porcupine and Klein

Make sure you watch with the sound on. The noises are adorable!

The Klein bottle is my favorite manifold. (Everyone should have a favorite manifold; if in doubt, go with a torus — many delicious edible varieties.)

http://freethoughtblogs.com/stderr/2016/11/10/things-that-delight-me-klein-bottles/

You can buy glass Klein bottles here. Also plastic ones.

 

One comment

  1. WOOOW That Klein bottle/hat shop is deliciously nerdy. Tempted to purchase for my dad. :p

    And apparently that pumpkin is just delicious… D’aww

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