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accepted Understanding the proof for: $d(f^*\omega)\overset{!}{=}f^*(d\omega)$
Jun
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comment Understanding the proof for: $d(f^*\omega)\overset{!}{=}f^*(d\omega)$
I see, but where does the $\phi$ in $\sum_{i,j}\frac{\partial f}{\partial y_i}\circ\phi(\frac{\partial (\phi_i)}{\partial x_j}dx_j)$ come from?
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asked Understanding the proof for: $d(f^*\omega)\overset{!}{=}f^*(d\omega)$
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accepted Who introduced the term Homeomorphism?
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comment Who introduced the term Homeomorphism?
Thank you, that is more than I hoped for.
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comment Calculating $d\omega$ for $\omega\in\Omega^{k}M$ explicitly for $k=2$
Dear @GeorgesElencwajg, you are absolutely right and I am thankful that you pointed that out. :-)