Basis for a Topology – Lecture 8 (Topology)

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Chapter 1: Topological Spaces
- 1.2: Basis for a Topology (finished)
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First of all, great lectures. As for now the best (as for first touch with topology) on YT that I have seen (and they are not the first one I'm looking). Thanks for sharing!
One notice - 0:34:48 Did you write triangle inequality the wrong way? It should be d(A, C) + d(C, B) >= d(A, B) instead of d(A, C) + d(C, B) <= d(A, B).

MichalWeglarz