# Proving the dor product of 4-vectors is Lorentz invariant

**1. The problem statement, all variables and given/known data**

Let A and B be 4-vectors. Show that the dot product of A and B is Lorentz invariant.

**3. The attempt at a solution**

Should I be trying to show that [itex]A.B=\gamma(A.B)[/itex]?

Thanks

http://ift.tt/1g15lNM

## Leave a comment