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This tag is used if a reference is needed in a paper or textbook on a specific result.

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Calculating degree via homotopy

I'm looking for a reference for the following: Suppose that $f_1,f_2\colon S^n\rightarrow S^n$ are smooth maps. Let $i\colon S^n\rightarrow \mathbb{R}^{n+1}$ be the inclusion, and suppose that $F\colo …
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