Refer to this question I asked a little while ago.
I thought I spotted a mistake in a textbook, but actually I made a mistake myself when I tried to write a counterexample. There is no longer a mistake I spot. The whole question is no longer relevant.
Should we close the question or should I delete the question? I think deleting the question does not tell the people who are trying to help me if I have solved my problems so I am personally against deleting the question. If the question should be closed, which reason should I use to close the question?
By the way, if it should be closed, please help me close the question.