I've sometimes used in Alexandroff one-point compactification in scenarios where...

		kccqzy on May 25, 2019 \| parent \| context \| favorite \| on: What's the difference between 0/0 and 1/0? I've sometimes used in Alexandroff one-point compactification in scenarios where you really "need the zero to have an inverse" and it works well in certain applications.