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George Jones
#8
Feb22-12, 07:55 PM
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Quote Quote by George Jones View Post
[tex]n^a n^b h_{ab}=?[/tex]
[tex]n^a n^b h_{ab}=0[/tex]
Quote Quote by George Jones View Post
Now suppose [itex]v^a[/itex] is orthogonal to [itex]n^a[/itex].

[tex]v^a v^b h_{ab}=?[/tex]
[tex]v^a v^b h_{ab}=v^a v^b g_{ab}[/tex]

Now choose an othonormal that has [itex]n^a[/itex] as one element. What does the matrix for [itex]h[/itex] with respect to this basis look like?