- #1
spaghetti3451
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What's the difference between ##\Bbb R^{4}## and ##\Bbb R^{1,3}##?
I know that the first one has metric Kronecker delta ##\delta_{ij}##. Does the second one have Minkowski metric ##g_{\mu \nu}##?
I know that the first one has metric Kronecker delta ##\delta_{ij}##. Does the second one have Minkowski metric ##g_{\mu \nu}##?
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