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Homework Help: Ex 0.2.5 in Sachs and Wu's textbook.

  1. Apr 16, 2013 #1

    MathematicalPhysicist

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    Gold Member

    In the next attachements are:
    1. Exercise 0.2.5 which I want help with.

    2. Proposition 0.2.1 and its proof.

    Now, basically a few things are changed in the theorem, I don't think I can use here the definition of s(t) in the proof of prop0.2.1 cause its s(t)=0, I don't think I can use this trick here.

    Other thoughts that I had, obviously if I plug m=0 into prop0.2.1 I get that I should have:
    $$\frac{d\gamma^1}{du}=\pm \frac{d\gamma^2}{du}$$, and $$\frac{d\gamma^2}{du}=a$$.

    My question is how do I satisfy condition b in the theorem, I guess this x should be $$\pm Id +constant$$
     

    Attached Files:

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