Hi, all
I was looking for something else, but when this popped up I had to share it. Some of you likely read this at the time it came out in 2003, but I did not.
https://www.sciencenews.org/article/contra-dances-matrices-and-groups
As not a mathematician, I chuckled as I scanned it – hope you do as well. Those of you who ARE mathematicians will get more of the nuances.
Dorcas Hand
Houston TX