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Rico1990

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I'm glad that I discovered this forum. :) You might save me.

I'm hearing right now differential geometry and am having some problems with the subject.

May you explain me the follwoing. We had the special case of the i-th projection. My lecturer now posited that the differential of the i-th projection is again the i-th projection. Can you explain me how to see that?

Greetings

Rico