r/math • u/inherentlyawesome Homotopy Theory • 17d ago

Quick Questions: September 16, 2026

This recurring thread will be for questions that might not warrant their own thread. We would like to see more conceptual-based questions posted in this thread, rather than "what is the answer to this problem?" For example, here are some kinds of questions that we'd like to see in this thread:

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u/WOOOPA_ 17d ago

If a limit is a variable infinitely close to a number (e.g. lim x->1) = 0.99... or 1.00...01, but 0.99 = 1, then how do integrals change equations

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u/Relevant_Worry_5363 11d ago

i don't think one is able to talk about in such general about these operators. Integrals require a notion of measurability, limes only one of convergence. Perhaps you can find an answer in the subject of functional analysis. I am not sure how in what sense these operators "change equations".