Urysohn’s lemma for g-functions and homotopy extension theorem Academic Article uri icon

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abstract

  • SummaryWe 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.

publication date

  • December 1, 1971