Heinrich Franz Friedrich Tietze

Heinrich Franz Friedrich Tietze (1880–1964) was an Austrian mathematician known primarily for his contributions to analysis, particularly in the areas of function theory and topology. He is recognized for the Tietze extension theorem, which states that if a function is continuous on a closed subset of a normal topological space, it can be extended to a continuous function on the entire space. This theorem is important in various branches of mathematics, including analysis and topology.