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In this video, I introduce Einstein notation (or Einstein Summation Convention), one of the most important topics in Tensor Calculus. Einstein notation is a way of expressing sums in short-form; repeated indices are used to denote the index that is summed over.
I describe the 4 major rules of Einstein notation, as well as the definitions of free and dummy indices. I also discuss some important information related to these major rules.
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Prerequisites: The videos before this one on this playlist: • Tensor Calculus
Lecture Notes: drive.google.com/open?id=1qgQ...
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