2. Introduction to tensors.

MIT 8.962 General Relativity, Spring 2020
Instructor: Scott Hughes
View the complete course: https://ocw.mit.edu/8-962S20
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The notion of 'coordinate' bases.  Several important 4-vectors for physics: 4-velocity, 4-momentum, 4-acceleration, and their properties.  1-forms, and tensors more generally.  Using the metric and its inverse to raise and lower tensor indices. Introduction to tensor fields. The number flux 4-vector, and its use in defining a conservation law.

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