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Results tagged with metric-tensor
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user 353831
The variables used in general relativity to describe the shape of spacetime. If your question is about metric units, use the tag "units", and/or "si-units" if it is about the SI system specifically.
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Why can we put these conditions on coordinates of worldsheet?
https://www.asc.ohio-state.edu/mathur.16/classicalstring.pdf
At first, I write some notations I need here.
$I=[0,1]$, $M$ means $(1,3)$ Minkowski space, smooth map $X:I\times I\to M$ is timelike world …
