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Ich
Ich is offline
#21
Oct15-10, 07:39 AM
Sci Advisor
P: 1,883
Thinking about it, it seems that I have no idea what extremal condition specifies a spacelike geodesic in a Lorentzian manifold. Their length function is at a saddle point, right?
This "greatest lower bound" thingy certainly applies only to definite metrics.