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robertlovespi.net | ||
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cre8math.com
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| | | | | In my last post, I talked about a textbook I had written to use in a course which, among other things, introduced students to a non-Euclidean geometry -- spherical geometry. And while the primary purpose of the text was for teaching a college-level course, the actual content of the text had a different origin. As... | |
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maxwelldemon.com
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| | | | | (with apologies to Virginia Wolff) A simple, classic puzzle is to give two shapes and ask if there is a way to cut one up so the pieces can be rearranged into the other. This game might seem to become silly if both shapes are the same; if we insist that the new arrangement must... | |
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richardelwes.co.uk
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| | | | | [Disclaimer: this is not a sponsored post or advert - it is a product purely of my own enthusiasm. But in the interests of full transparency, let me say one thing: for reasons you may come to understand, I developed a deep desire for some Magformers octagons. Although these exist, they are like gold-dust. So... | |
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www.paulgraham.com
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