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Sequences are usually the first thing to study in a course on real analysis. If you know the definition of a limit in terms of sequences, then this is fairly elementary. It's introductory pure mathematics and requires no topology.Hi,PF

I've been at the spanish forum, RM: we've came to the conclusion that some background on sequences and topology is needed to face the question, and I have none of them.

My decision is to give a last chance: the quote above. Is there an easier answer to the statement of the thread, based on an undergraduate's skills and lacks?.

I've also translated and wrote down the quote, but RM leads me again to topology.

My question: can you give me some more hints on Office_Shredder's quote?.

If I should provide more information, please tell me.

Greetings!

Are you taking a course in real analysis?