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For the Museum of Mathematics

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Searching through the archives of Math Mondays, it appears there hasn’t been a column on that ubiquitous bit of geometrical potential, the ordinary business card. Today’s installment will begin to fill that gap, which is a significant one since there are oodles of incredible business card constructions out there.

Although there are lots of possible directions to go in the world of business card math-making, we would be remiss not to begin with the granddaddy of them all: Jeanine Mosely’s Business Card Menger Sponge.

A project nine years in the making, this tour de force involved 66,000 business cards and hundreds of folders. So this week’s installment is very short, as this project stands by itself.

At the Institute for Figuring’s web page, you can read all about the structure of the Business Card Menger Sponge and about the project to build it. We’ll have more on geometrical constructions from business cards in a future installment of Math Monday.

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Glen Whitney

Glen Whitney

Executive Director, Museum of Mathematics


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