For questions concerning a specific proof or a specific solution, asking for verification, identifying errors, suggestions for improvement, etc. (You should not use this tag if the question does not contain a proposed proof/solution.)

For questions concerning a specific proof (or a proof sketch) or a solution to some problem; asking a question with this tag indicates one would like answers to respond broadly as to the following:

- Verification of the proof/solution;
- Identifying errors in the proof/solution;
- Suggestions for improving the proof/solution;
- Alternative approaches.

Also, consider the related tags proof-writing and alternative-proof.