If you don’t find abstract mathematics palatable, try this one. Thanks to George Hart, Chief of Content at The Museum of Mathematics, we finally have proof: it is possible to slice your bagel into two and produce two linked, unbroken halves of this delicacy of Jewish origin (its name comes from Yiddish “beygel”). The proof is constructive.
![](http://www.georgehart.com/bagel/bagel0.jpg)
The layperson might take a quick look and say “Hey, that’s a Möbius strip shaped bagel!” Of course, it obviously isn’t, as it has a cream cheese side and a non-cream cheese side. But Mr. Hart does pose the Möbius bagel problem as a possible extension. My guess is that poor young George’s mathematical growth was seriously impeded by remarks such as “How many times have I told you not to play with your food?!” I definitely see an entrepreneurial opportunity here: just imagine how many math conferences would pay big bucks for catering that features Möbius bagels, dodecahedron-noodle soup, a spaghetti-knot challenge, and many Klein bottles of wine. I am soooo tagging this entry “Food for thought…”
[HT to Jeff Ely at Cheap Talk]
And the lox potential makes it a no-brainer for fishy fishy fishy fish