From Wikipedia, the free encyclopedia.
This is a list of lists of unsolved problems in various subjects:
- Unsolved problems in mathematics
- Unsolved problems in physics
- Unsolved problems in chemistry
- Unsolved problems in biology
- Unsolved problems in economics
- Unsolved problems in governance
- Unsolved problems in cognitive science
- Unsolved problems in neuroscience
- Unsolved problems in computer science
- Unsolved problems in software engineering
