Hope this is the right forum for my question. I'm into statistics and quite often see assumptions involving set theory. I know some set theory but am having trouble understanding it for any application. I would like to narrow this gap, maybe because this type of mathematics seems most interesting to me or Maybe because it seems so hard? Anyway, my problem when studying some books is that I'm having a hard time imagining any set theory than the most basic. For example, I've looked at descrptive set theory, it seemed hard though. Therefore I would like to ask you about any book you could recommend. My question is a bit fuzzy but I hope you know what I mean. Thanks!