Category:Open problems

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Unsolved problems: category for problems of a theoretical nature. See lists of unsolved problems.

Use subcategories where applicable, e.g. Category:Unsolved crimes, Category:Unexplained disappearances. For open disputes, try Category:Controversies or Category:Conflict.

Subcategories

This category has the following 17 subcategories, out of 17 total.

 

B

C

D

E

H

I

L

P

S

U

U cont.

W

Y