four-vector
vector in special relativity well-behaved with respect to Lorentz transformations
four-velocity
analogue of velocity in four-dimensional spacetime
electromagnetic four-potential
relativistic vector field
Four-current
4-dimensional analog of current density and charge density
timelike four-vector
concept in special relativity
four-momentum
generalization of the classical three-dimensional momentum to four-dimensional spacetime
position four-vector
place in spacetime, viewed as a four-vector
four-acceleration
four-vector that is analogous to classical acceleration
four-force
four-vector that replaces the classical force