Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mathematics A vector in
four-dimensional vector space , especially one having threespatial and onetemporal dimensions
Etymologies
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Examples
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The expression for this action A is where where is the four-vector position of the ith particle as a function of some parameter.
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It would also spoil the Lorentz invariance by itself because the entropy density is a time component of a four-vector (am entropy current) and its nonzero
The Reference Frame 2010
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