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Homotopy Classification of Mappings of a 4-Dimensional Complex into a 2-Dimensional Sphere

Published online by Cambridge University Press:  22 January 2016

Nobuo Shimada
Nobuo Shimada*
Affiliation:
Mathematical Institute, Nagoya University
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Steenrod [1] solved the problem of enumerating the homotopy classes of maps of an (n + 1)-complex K into an n-sphere Sn utilizing the cup-i-product, the far-reaching generalization of the Alexander-Čech-Whitney cup product [7] and the Pontrjagin *-product [5].

Type
Research Article
Information
Nagoya Mathematical Journal , Volume 5 , February 1953 , pp. 127 - 144
Copyright
Copyright © Editorial Board of Nagoya Mathematical Journal 1953

References

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