|Pages in this category should be moved to subcategories where applicable. This category may require frequent maintenance to avoid becoming too large. It should directly contain very few, if any, pages and should mainly contain subcategories.|
This category has the following 3 subcategories, out of 3 total.
Pages in category "Open problems"
The following 21 pages are in this category, out of 21 total.
- Open problem (unsolved)
- Lists of unsolved problems (unsolved)
- Erdstall (unsolved)
- Four Corners Methane Hot Spot (chemistry)
- Great Filter (astronomy)
- Hard problem of consciousness (philosophy)
- Overlapping markup (computing)
- Quantum computing (engineering)
- Terraforming (earth)
- Von Neumann architecture (computing)
- Wireless mesh network (computing)