Proposition 4.8.1. [04QD]

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Proposition 4.8.1.

The singular affine structure on $\mathbb{S}^{n}$ of [Li19] matches the one induced on $\Sk(X)$ by the retraction $\pi$ constructed in Theorem A when $n=3$ , and by $\rho$ in Section 3.3.2 when $n=2$ .