- #36

#### renormalize

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It follows directly from the coordinate transformation law for the connection (see my post #22 above). But it's really just a formal result because, other than in rectangular coordinates, a such a transform doesn't correspond to anyHmm, is that true? I have never tried that, and I am not even sure exactly how to do it, but I am rather skeptical about it.

*useful*Poincaré transformation. In Schwarzschild coordinates ##(t,r,\theta,\phi)## a linear transform allows us, for example, to rotate through an angle ##\alpha## in the ##r-\theta## plane to get the new coordinates ##(t^{^{\prime}},r^{\prime},\theta^{\prime},\varphi^{\prime})=(t,r\cos\alpha-\theta\sin\alpha,r\sin\alpha+\theta\cos\alpha,\varphi)##. And the connection will dutifully transform like a tensor into the primed coordinates. But why and to what end would we do this?

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