- 706

- 8

## Main Question or Discussion Point

Is this correct?

[tex]

\nabla _{\vec{p}} \vec{p} = (\nabla_a \vec{p} ) p^a

=< (\nabla_a p^0 ) p^a, (\nabla_a p^1 ) p^a , (\nabla_a p^2 ) p^a, (\nabla_a p^3 ) p^a >

[/tex]

(where the a's are summed from 0 to 3)

[tex]

\nabla _{\vec{p}} \vec{p} = (\nabla_a \vec{p} ) p^a

=< (\nabla_a p^0 ) p^a, (\nabla_a p^1 ) p^a , (\nabla_a p^2 ) p^a, (\nabla_a p^3 ) p^a >

[/tex]

(where the a's are summed from 0 to 3)