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Science and Math
Science and Math World

I’m having a blasty-bast with Group Explorer today. How have I never played with this before!?

https://sourceforge.net/projects/groupexplorer/?source=typ_redirect

Complex analysis – the perfect subject for combining visual and analytic thinking. I just read “Visual Complex Analysis” by Tristan Needham, a basic book on complex analysis: lots of historical references, uncompromising explanations, lots of problem solving and plenty of beautiful illustrations!

I have this book. It is very good.

Seem to be on a D_8 theme. Quite like this representation of D_8 with matrices with graphs to show what happens to a general point under action of each matrix. Of course, symmetries only work together on corners of a square: (a,a), (-a,a), (-a,-a) and (a,-a).