Homotopy and homology groups of the n-dimensional Hawaiian earring

Eda Katsuya*, Kazuhiro Kawamura

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)


    For the n-dimensional Hawaiian earring ℍn, n ≥ 2, πn(ℍn, o) ≃ ℤω and πi(ℍn,o) is trivial for each 1 ≤ i ≤ n - 1. Let CX be the cone over a space X and CXVCY be the one-point union with two points of the base spaces X and Y being identified to a point. Then Hn(X V Y) ≃ Hn(X) ⊕ Hn(Y) ⊕ Hn(CX V CY) for n ≥ 1.

    Original languageEnglish
    Pages (from-to)17-28
    Number of pages12
    JournalFundamenta Mathematicae
    Issue number1
    Publication statusPublished - 2000


    • Cech homotopy group
    • Homology group
    • n-dimensional Hawaiian earring

    ASJC Scopus subject areas

    • Algebra and Number Theory


    Dive into the research topics of 'Homotopy and homology groups of the n-dimensional Hawaiian earring'. Together they form a unique fingerprint.

    Cite this