# john conway (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover john conway. Page: Feed: --- ## [Travels with Claude: A Natural Celebration of Pi](https://nat.familykuhn.net/2026/03/a-natural-celebration-of-pi/?utm_source=rss&utm_medium=rss&utm_campaign=a-natural-celebration-of-pi) _2026-03-20 · Nat · Nat's blog_ \[3/23/2026: At least one person complained that the post was too long (perhaps because of spending too much time watching cat videos), so I had Claude generate a couple of summaries, which I put at the end of the post. I made a couple of small corrections.\] Another Pi Day, March 14, has come and Continue reading "Travels with Claude: A Natural Celebration of Pi" ## [An Illuminating Proof of Schur’s Orthogonality Relations for Group Representations](https://nat.familykuhn.net/2025/01/a-slick-proof-of-schurs-orthogonality-relations-for-group-representations/?utm_source=rss&utm_medium=rss&utm_campaign=a-slick-proof-of-schurs-orthogonality-relations-for-group-representations) _2025-01-28 · Nat · Nat's blog_ Issai Schur s orthogonality relations for characters of group representations are surely a mathematical wonder. Unfortunately, the standard proof, even from great expositors like JP Serre and Michael Artin, typically involves a bunch of index gymnastics that never meant much to me. Back when I was a mathematician, I saw a great proof (for compact Lie Continue reading "An Illuminating Proof of… ## [The Kuhn Piano Moves On](https://nat.familykuhn.net/2025/01/the-kuhn-piano-moves-on/?utm_source=rss&utm_medium=rss&utm_campaign=the-kuhn-piano-moves-on) _2025-01-19 · Nat · Nat's blog_ My grandfather, Sam Kuhn, married my grandmother, then Minette Stroock, around 1920. They were from well-to-do families, and received a Steinway baby grand piano as a wedding present. By the time I first remember seeing it in the 1960s, my grandmother and her decorator had replaced its original black finish with a bright red, meant Continue reading "The Kuhn Piano Moves On" [Listen](https://nat.familykuhn.net/wp-content/uploads/img_1946-1.mp4)