Category Archives: Math

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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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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Mathematica makes me want to cry: standard radical form edition

Here is a thing that makes me want to cry: every high school student at some point learns about putting things in something called “standard radical form.”  For example, I learned to simplify by multiplying the top and bottom by … Continue reading

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“A Void” by George Perec (translated by G. Adair)

I knew about this book for a long time before I read it: it’s one of several translations of La Disparition, a French novel (really, a sort of detective thriller) written without the letter “e.”  The English translation holds to … Continue reading

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