open problem
Still seeking answer
An open problem is a question or puzzle that remains unsolved despite attempts by experts in a field.
The term appears most often in mathematics and computer science, where proving or disproving certain conjectures can take decades or centuries: The Riemann hypothesis remains an open problem.
More casually, any unresolved difficulty: How to get teenagers off their phones is still an open problem.
- unsolvedNot yet figured out
- unsolved mysteryPuzzle lacking resolution
- puzzleChallenge testing ingenuity
- questionRequest for information
- research questionQuery guiding systematic investigation
unanswered question · mystery · conjecture · challenge · conundrum · mathematics · complexity · hypothesis · dilemma · enigma · unknown · riddle · Holy Grail · science · cutting edge · proof · algorithm · paradox