Tag Archives: Mike Lawler

In Praise of People Who Tell Us How to Play with New Toys

I’ve been thinking about getting a 3D printer for a long time but haven’t taken the plunge yet. Aside from the money, space, and inevitable proliferation of small plastic things to step on, part of me is worried I wouldn’t … Continue reading

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Fold Your Way to Glory

Yesterday, I led a meeting of a Teachers’ Math Circle about the fold and cut theorem. This theorem says any region with a polygonal boundary can be folded and cut from a sheet of paper using only one cut. I … Continue reading

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Diagonalization and Other Mathematical Wonders

It’s only a slight exaggeration to say I’m a mathematician because of Cantor’s diagonalization arguments (both the proof that the rationals are countable and the proof that the reals aren’t). I was already enjoying my intro to proofs class when … Continue reading

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