Summary
We give here a generalization of the classical Urysohn’s lemma for g-functions and apply it to the proof of the homotopy extension theorem for g-functions. It was also necessary to generalize the concept of algebraic operation, what is interesting in itself.
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Entrata in Redazione il 31 agosto 1970.
This work was done with partial support of the National Research Council of Canada during the Summer Institute for Mathematics in Vancouver, B. C. (1970).
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Lintz, R.G. Urysohn’s lemma for g-functions and homotopy extension theorem. Annali di Matematica 88, 155–176 (1971). https://doi.org/10.1007/BF02415065
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DOI: https://doi.org/10.1007/BF02415065