Abstract
Given two mappings f, g : X → Y, f is said to be homotopic to g (f ≃ g) provided that there exists a mapping h:X × I → Y with h(x,0) = f(x) and h(x,1) = g(x) for each x in X.
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Bibliography
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© 1979 Springer-Verlag New York Inc.
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Whyburn, G., Duda, E. (1979). Homotopy. In: Dynamic Topology. Undergraduate Texts in Mathematics. Springer, New York, NY. https://doi.org/10.1007/978-1-4684-6262-3_25
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DOI: https://doi.org/10.1007/978-1-4684-6262-3_25
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