@davidkbutler.bsky.social on Bluesky

JavaScript RequiredThis is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is. Learn more about Bluesky at bsky.social and atproto.com.

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David K Butler

davidkbutler.bsky.social

did:plc:62z5zvrhttrg3dtn5j3myks3

Oh I love integration by parts and substitution and the choices are my favourite part too.

2025-10-09T04:01:20.158Z