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Structure of the second homotopy group of the union of two spaces - MaRDI portal

Structure of the second homotopy group of the union of two spaces (Q1088200)

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scientific article; zbMATH DE number 3990394
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English
Structure of the second homotopy group of the union of two spaces
scientific article; zbMATH DE number 3990394

    Statements

    Structure of the second homotopy group of the union of two spaces (English)
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    1987
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    Translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 143, 147-155 (Russian) (1985; Zbl 0584.55011).
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    van Kampen theorem for second homotopy group
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    triads
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    fundamental groups
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    knots in \({bbfR}^ 4\)
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