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A generalization of the concept of absolute retract


Author: C. W. Saalfrank
Journal: Proc. Amer. Math. Soc. 12 (1961), 374-378
MSC: Primary 54.60
DOI: https://doi.org/10.1090/S0002-9939-1961-0125558-7
MathSciNet review: 0125558
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References [Enhancements On Off] (What's this?)

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  • [2] K. Borsuk, Sur les rétractes, Fund. Math. vol. 17 (1931) pp. 152-170.
  • [3] S. Lefschetz, Algebraic topology, Amer. Math. Soc. Colloquium Publications, vol. 27, 1942. MR 0007093 (4:84f)
  • [4] S. T. Hu, A new generalization of Borsuk's theory of retracts, Nederl. Akad. Wetensch. Proc. vol. 50 (1947) pp. 1051-1055. MR 0023522 (9:368b)
  • [5] C. W. Saalfrank, Retraction properties for normal Hausdorff spaces, Fund. Math. vol. 36 (1949) pp. 93-198. MR 0031710 (11:194b)
  • [6] P. J. Hilton, An introduction to homotopy theory, Cambridge University Press, 1953. MR 0056289 (15:52c)

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DOI: https://doi.org/10.1090/S0002-9939-1961-0125558-7
Article copyright: © Copyright 1961 American Mathematical Society

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