Hirato, Yoshihiro; Kachi, Hideyuki; Mukai, Juno 21-st nd 22-nd homotopy groups of the \(n\)-th rotation group. (English) Zbl 1158.55018 J. Fac. Sci., Shinshu Univ. 41, 1-28 (2006). MSC: 55Q52 55Q40 55Q50 55R10 PDFBibTeX XMLCite \textit{Y. Hirato} et al., J. Fac. Sci., Shinshu Univ. 41, 1--28 (2006; Zbl 1158.55018)
Kachi, H.; Mukai, J.; Nozaki, T.; Sumita, Y.; Tamaki, D. Some cohomotopy groups of suspended projective planes. (English) Zbl 1039.55010 Math. J. Okayama Univ. 43, 105-121 (2001). Reviewer: Akira Koyama (Kashiwara) MSC: 55Q55 PDFBibTeX XMLCite \textit{H. Kachi} et al., Math. J. Okayama Univ. 43, 105--121 (2001; Zbl 1039.55010)
Kachi, Hideyuki; Mukai, Juno The 19 and 20-th homotopy groups of the rotation groups \(R_n\). (English) Zbl 1007.55009 Math. J. Okayama Univ. 42, 89-113 (2000). Reviewer: Katsumi Shimomura (Kochi) MSC: 55Q52 57T20 PDFBibTeX XMLCite \textit{H. Kachi} and \textit{J. Mukai}, Math. J. Okayama Univ. 42, 89--113 (2000; Zbl 1007.55009)
Kachi, Hideyuki; Mukai, Juno Some homotopy groups of the rotation group \(R_n\). (English) Zbl 0932.55017 Hiroshima Math. J. 29, No. 2, 327-345 (1999). Reviewer: Katsumi Shimomura (Kochi) MSC: 55Q52 55Q40 55Q50 55R10 PDFBibTeX XMLCite \textit{H. Kachi} and \textit{J. Mukai}, Hiroshima Math. J. 29, No. 2, 327--345 (1999; Zbl 0932.55017)