No. The natural objects in Minkowski space are Lorentz scalars, 4-vectors, etc, and there is no room for relativistic mass there. The definition of relativistic mass is "a different mass ($\gamma m$) so that Newtonian formula (e.g $p=mv$) work in regions where Newtonian formula don't work". Definitely sus. The relevant Minkowski space things are: $$ u_{\mu} = (\gamma c, \gamma \vec v) $$ (Note: $\gamma$ is already here, and mass is not). Then $$ p_{\mu} = mu_{\mu}$$ (note: looks like a generalization of $\vec p = m\vec v$...is that not good enough?). $$p^2 = m^2|u|^2 = (mc)^2 $$ We're done: no relativistic mass. You can also write: $$ p_{\mu} = mu_{\mu} = (\gamma mc, \gamma m\vec v)$$ and then call that: $$ p_{\mu} = (E/c, \vec p) $$ with $$ E = \gamma mc^2 $$ $$ \vec p = \gamma m \vec v$$ and then have the urge to do: $$ m \rightarrow \gamma m $$ so: $$ E = mc^2 $$ $$ \vec p = m\vec v $$ at all $v$, but that has nothing to do with Minkowski space.