I've been working through Polchinski on my own, and I have a really basic question. How would one derive equation 2.4.1? What does it even mean to write the stress tensor with the new indices z and z-bar? I thought this was obvious, but it isn't working out for me.(adsbygoogle = window.adsbygoogle || []).push({});

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# Polchinski 2.4.1 change of coordinates

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