Mathematical Journal of Okayama University volume62 issue1
2020-01 発行
Oshima, Hideaki
Ibaraki University
Oshima, Katsumi
Toda bracket
Unstable higher Toda bracket
Higher composition
Cofibration
Coextension
Extension
Dedicated to memories of the Arakis
Mathematics Subject Classification. Primary 55Q05; Secondary 55Q35, 55P05.