5 ms·
there's a nice trick in Thurston's book on 3-manifolds where you glue a strip of paper at the ends into a Möbius band and cut along the middle to get a trefoil
by mrcactu5 10y ago
there's a nice trick in Thurston's book on 3-manifolds where you glue a strip of paper at the ends into a Möbius band and cut along the middle to get a trefoil knot out of paper.
i did it with 3 and 5 twists and cut along the middle you get various knots this way
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http://library.msri.org/books/gt3m/ http://library.msri.org/books/gt3m/
- patrickmclaren 10y agoThis construction makes for a nice undergrad talk. Back when I was in college, my math club held a "Brisk walk through Topology" lecture and was able to pull a fairly large audience from both the Math and CS colleges.