I'm a middle aged mathematician and computer programmer. My specialties include differential algebra and algebraic geometry. I've spent a lot of time working on the Sage system in support of a textbook that I'm writing on the Risch algorithm. Currently (2022) working on collaborate and BigBlueButton.
All original source snippets I post on stackoverflow are dedicated to the public domain and, at your option, covered under the Unlicense. Do with them as you see fit.
See https://meta.stackexchange.com/a/12539/564466 for more about copyright issues on stackexchange.
I also preach the good word and run freesoft.org.