I have a question about my Mathematics Stack Exchange post: Existence condition of an expressionI am new in mathstack and before writing a question I have tried to read how be able to write a quite good question in order to receive an answer. Many times in fact new users write question not forumulated so well and they risk that their question will be closed without any answer. I don't know if my question is formulated well, I have tried to do this... but none have answered, so maybe it is not so.
My question requires only a confirmation on my idea: so a "yes well done" or "no you should do in this way". Since none have posted even a comments I would like to understand what is wrong on my question...maybe it is too trivial for this site? Thanks in advance!