Seminar on This Week’s Finds
Azimuth,
I wrote 300 issues of a column called This Week’s Finds, where I explained math and physics. In the fall of 2022 I gave ten…
I wrote 300 issues of a column called This Week’s Finds, where I explained math and physics. In the fall of 2022 I gave ten…
This Thursday is the last of my lectures on This Week’s Finds… until they resume next September. As usual we’ll meet in Room…
The Dynkin diagram ofE6\mathrm{E}_6has 2-fold symmetry:So, this Lie group has a nontrivial outer automorphism of order 2. This…
Last timewe saw what we can do by choosing a square root of−1-1in the octonions. They become a 4-dimensional complex vector…
My last article on the ten-fold way was a piece of research in progress — it only reached a nice final form in the comments. …