Category:Open problems
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.
Wikimedia Commons has media related to Open problems.
Use subcategories where applicable, e.g. Category:Unsolved crimes, Category:Unexplained disappearances. For open disputes, use Category:Controversies.
Subcategories
This category has the following 21 subcategories, out of 21 total.
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Pages in category "Open problems"
The following 19 pages are in this category, out of 19 total.
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This category content has been reduced to only pages contained in the ZIM file.
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