Identity
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In Euclidean three-space with coordinates [itex](x,y,z)[/itex] and line element
[tex]ds^2 = dx^2+dy^2-dz^2[/tex]
It is easy to show using the geodesic equation that:
[itex]x = lu+l'[/itex], [itex]y=mu+m'[/itex], [itex]z=nu+n'[/itex]
where [itex]u[/itex] is an affine parameter.
However, is it possible to find a relation between [itex]l,m,n[/itex]?
[tex]ds^2 = dx^2+dy^2-dz^2[/tex]
It is easy to show using the geodesic equation that:
[itex]x = lu+l'[/itex], [itex]y=mu+m'[/itex], [itex]z=nu+n'[/itex]
where [itex]u[/itex] is an affine parameter.
However, is it possible to find a relation between [itex]l,m,n[/itex]?
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