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
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
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
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
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
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