Back Fortsetzungssatz von Tietze German قضیه توسیع تیتز Persian Tietzen jatkolause Finnish Théorème de prolongement de Tietze French משפט ההרחבה של טיצה HE Teorema di estensione di Tietze Italian 티체 확장정리 Korean Twierdzenie Tietzego Polish Теорема Титце о продолжении Russian Tietzes utvidgningssats Swedish
In topology, the Tietze extension theorem (also known as the Tietze–Urysohn–Brouwer extension theorem or Urysohn-Brouwer lemma[1]) states that any real-valued, continuous function on a closed subset of a normal topological space can be extended to the entire space, preserving boundedness if necessary.
- ^ "Urysohn-Brouwer lemma", Encyclopedia of Mathematics, EMS Press, 2001 [1994]
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