50:40

Metric Spaces 2: Open Sets

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Metric Spaces Introduction, Real Analysis II

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Lecture 1: Basic Banach Space Theory

59:43

Lecture 1: Motivation, Intuition, and Examples

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Algebraic Topology 1: Homotopy Equivalence

12:31

Weird notions of "distance" || Intro to Metric Spaces

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Algebraic Topology 0: Cell Complexes

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Intro Real Analysis, Lec 33: Euclidean Metric, Triangle Inequality, Metric Spaces, Compact Sets