You are abducted by space aliens and dumped, blindfolded, on a strange asteroid! Removing your blindfold, you decide to play...
Continue reading...topology
Mug Trick
Take a mug that has a handle, and fill it with coffee. Hold the mug in your hand. Now, without...
Continue reading...Rental Harmony
You and your college friends decide to rent a house together, and the N of you have found a house...
Continue reading...Euler Characteristic
Take out a sheet of paper. Pop quiz! (just kidding). Draw any number of dots on your page. Now connect...
Continue reading...Why an International Date Line?
Can you find a continuous one-to-one function from the circle to the real line? Put it another way: is it possible, for...
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