At the Airspeed Velocity of an Unladen Swallow

Your up and down emotions are like clouds in the sky; beyond them, the real, basic human nature is clear and pure.

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—	Lama Yeshe (via om13om)

Math isn't just for the birds. This blog is dedicated to mathematical beauty, humor, quirk, mystery, and everything beyond and between.

The Pigeon Hole Principle:

If m pigeons are placed in n pigeonholes and m > n, then at least one hole must contain at least two pigeons.

The name was chosen because it has a nice ring to it and is easy to remember. If you'd like to explore some pigeonhole problems, try adding /tagged/pigeonholeproblem to the end of our URL.