# What can I do if the problem is deleted when I tried to edit my answer?

Yesterday ($8$ hours ago) there was a problem asking to find the residue of $\exp (\csc(1/z))$ at each of its singularity. I answered that problem and then today morning, I thought to edit my answer by adding more details. Now I cannot find that problem with my answer which took me about $30$ minutes to solve. This is the first time that I experienced something like this. Is there an this that I can do regarding this?

• $\exp(\text{whatever})$ never has a pole. – Daniel Fischer Nov 4 '17 at 15:50
• Related: What to do when OP deletes a question right after you have posted a correct answer, which suggests the use of our canonical thread for requesting reopenings, undeletions, etc. – hardmath Nov 4 '17 at 22:58
• – drhab Nov 6 '17 at 19:06
• @DanielFischer: What about $\exp(-2\ln z)$? – celtschk Nov 11 '17 at 11:52
• @celtschk On a domain where the logarithm is holomorphic except for (possibly) isolated singularities, it has no poles. Yeah, I didn't explicitly say that $\text{whatever}$ should be holomorphic except for possibly isolated singularities. I should have. – Daniel Fischer Nov 11 '17 at 12:12