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Complex Polynomial Representation of $π_{n+1}(s^{n})$ and $π_{n+2}(s^{n})$

Francisco-Javier Turiel
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Abstract

The complex affine quadric $Q^{m}=\{z\in {\Bbb C}^{m+1}\mid z_{1}^{2}+...+z_{m+1}^{2}=1\}$ deforms by retraction onto $S^{m}$; this allows us to identify $[Q^{k},Q^{n}]$ and $[S^{k},S^{n}]=π_{k}(S^{n})$. Thus one will say that an element of $π_{k}(S^{n})$ is complex representable if there exists a complex polynomial map from $Q^{k}$ to $Q^{n}$ corresponding to this class. In this Note we show that $π_{n+1}(S^{n})$ and $π_{n+2}(S^{n})$ are complex representable.

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BibTeXRIS

Francisco-Javier Turiel. 2007-02-12. Complex Polynomial Representation of $π_{n+1}(s^{n})$ and $π_{n+2}(s^{n})$. https://arxiv.org/abs/math/0702324

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