The contravariant four-vector arising in special and general relativity,
![x^mu=[x^0; x^1; x^2; x^3]=[ct; x; y; z],](/images/equations/PositionFour-Vector/NumberedEquation1.svg) |
(1)
|
where 
is the speed of light and 
is time. Multiplication of two four-vectors gives the spacetime
interval
 |  |  |
(2)
|
 |  |  |
(3)
|
 |  |  |
(4)
|
Position Four-Vector
See also
Four-Vector, Lorentz Transformation, QuaternionExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Position Four-Vector." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PositionFour-Vector.html