Abstract
The purpose of this note is to study the homotopy groups of $U(n)$ and $S_{p}(n)$ of the first dimension over the meta-stable range. Our method is to use the classical $\mathrm{EHP}$-sequence.
Citation
Kaoru Morisugi. "On the homotopy group $\pi_{8n+4}(Sp(n))$ and the Hopf invariant." J. Math. Kyoto Univ. 31 (1) 121 - 132, 1991. https://doi.org/10.1215/kjm/1250519894
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