Category Archives: Math

“Dialogues on mathematics” by Alfred Renyi

For various reasons I have recently been reading a bunch of books broadly addressing the theme “what is mathematics?”  (Linderholm was accidentally a lead-in, and clearly belongs in the category.)  This one is a short (under 100 pages) and snappy read, … Continue reading

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“Mathematics Made Difficult” by Carl E. Linderholm

I have seen attributed to Halmos (Linderholm’s advisor) the description of this book as an in-joke to the mathematical community, and that’s about right: I don’t think it would be possible to explain why it’s funny to someone who doesn’t … Continue reading

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Coincidences among small groups

I like to study reflection groups of various kinds.  Let Sn denote the group of permutations of n points, let GL(n, q) denote the general linear group of invertible linear transformations of an n-dimensional vector space over the finite field with … Continue reading

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March for Science MN

This gallery contains 19 photos.

Had a great time at March for Science MN last weekend.  (The fact that it was in the 70s and sunny didn’t hurt!)  Here are some photos.   Some more posters I liked but didn’t get good photos of included … Continue reading

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A nice note

Purely in the category of self-congratulation: I received a lovely note (edited below) from an advisor in the University Honors Program, for which I’ve been teaching multivariable calculus, differential equations and linear algebra this year.  I heard through many disappointed … Continue reading

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Gauss and Minnesota

Until a colleague told me about it, I had not known that there is a Gauss family connection to Minnesota: Carl Friedrich’s second son (first by his second wife) Eugene had a falling out with his father, came to America, … Continue reading

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Herstmonceux

As I mentioned, after Vancouver I went to a conference at Herstmonceux Castle in Sussex, England.  It was mathematically excellent, and I feel that BBC detective shows properly prepared me for my first visit to the UK.  Trees in England … Continue reading

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