to
, is defined and secured in the same way as for Newtonian relativity.
The same meaning as above will be given to
and
; also
is the fundamental velocity which is the velocity of light in vacuo. Then we define
to
, is defined and secured in the same way as for Newtonian relativity.
The same meaning as above will be given to
and
; also
is the fundamental velocity which is the velocity of light in vacuo. Then we define