I know that I asked similar questions in the past, but I still do not seem to figure it out, what the best way is to post a 'complex' diagram on this website.
Nothing seems to work, and the things that do work aquire a lot of work and take to much time in my opinion...
I just posted this question: Universal property of product topology, unique up to homeomorphism
Which was not fun at all. Can you please tell me, how I could have drawn these diagrams here with the most efficient method?