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Q3785621 - MaRDI portal

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scientific article

    Statements

    publication date
    1987
    0 references
    zbMATH Keywords
    projective crossed module
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    second homotopy group
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    fundamental group
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    2- dimensional complex
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    3-dimensional complex
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    Identifiers

    Mathematics Subject Classification ID
    57M20
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    57M05
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    55Q05
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    zbMATH DE Number
    4048672
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