John Carlos Baez on Nostr: nprofile1q…cvgna - sure, you can ask questions! I have no idea whether I'll be able ...

nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpq0l88929ze7h5h7g7pu7y0e0077c03zqtp9zk63zpx4gg7m2ypcnqmcvgna (nprofile…vgna) - sure, you can ask questions! I have no idea whether I'll be able to answer them. My work on graph Laplacians was not about anything practical. It was solely focused on a rather quirky but beautiful subject: topological crystals.

https://johncarlosbaez.wordpress.com/2016/07/22/topological-crystals-part-1/