David Hilbert proposed a list of research problems known as Hilbert's problems.
Notes on verification
Well-documented historical fact confirmed by Wikipedia, MacTutor History of Mathematics, and Britannica, with strong academic consensus.
Sources
- Future of mathematics (en.wikipedia.org)
- https://mathshistory.st-andrews.ac.uk/Extras/Hilbert_Problems/ (mathshistory.st-andrews.ac.uk)
- https://www.simonsfoundation.org/2020/05/06/hilberts-problems-23-and-math/ (simonsfoundation.org)
- https://mathworld.wolfram.com/HilbertsProblems.html (mathworld.wolfram.com)
- https://www.britannica.com/science/Hilberts-23-problems (britannica.com)
- http://aleph0.clarku.edu/~djoyce/hilbert/ (aleph0.clarku.edu)