A blog about math, puzzles, teaching, and academic technology

Euler's Gem: The polyhedron formula and the birth of topology

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

- RT @ProfNoodlearms: @daniel_bilar @divbyzero here... kickstarter.com/projects/billt… 1 day ago
- RT @ProfNoodlearms: Busy week, so I forgot to share that my MandelMap poster arrived. It's pretty. I have to figure out how to hang it. htt… 1 day ago
- RT @wilderlab: Print the Ambiguous Cylinder Illusion in 3D thingiverse.com/thing:1655261 cc @divbyzero https://t.co/jVdsc5WnQT 2 days ago
- RT @mikeandallie: @divbyzero This is a fun problem to share with students that Gauss solved (at age 23) mikesmathpage.wordpress.com/2014/03/23/a-r… 3 days ago
- Gauss (re)discovered the arithmetic-geometric mean en.wikipedia.org/wiki/Arithmeti… when he was 14 yrs old. (Lagrange had used the algorithm earlier) 3 days ago

- What is the difference between a theorem, a lemma, and a corollary?
- How to curve an exam and assign grades
- Music is math: ten songs about mathematics
- Make a Sugihara Circle/Square Optical Illusion Out of Paper
- Sugihara's Circle/Square Optical Illusion
- Playing the probabilities in Settlers of Catan
- Tricks for easily creating BibTeX files
- Coffee stains and the Simpsons in your LaTeX document
- LaTeX now available in Google Docs
- The transcendence of e

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