Tietze

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Tietze:

In topology, the Tietze extension theorem states that continuous functions on a closed subset of a normal topological space can be extended to the entire space, preserving boundedness if necessary.

Tietzes graph

In the mathematical field of graph theory, Tietze's graph is an undirected cubic graph with 12 vertices and 18 edges. It is named after Heinrich Franz Friedrich Tietze, who showed in 1910 that the Möbius strip can be subdivided into six regions that all touch each other – three along the boundary of the strip and three along its center line – and therefore that graphs that are embedded onto the Möbius strip may require six colors. The boundary segments of the regions of Tietze's subdivision form an embedding of Tietze's graph.

Tietze may refer to:

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Christopher Tietze was a United States physician best known for his stance in the United States pro-choice movement to permit abortion in the United States.

Erica Tietze-Conrat (born June 20, 1883 Vienna, died December 12, 1958, in New York City, also known as Erika Conrat, Erica Tietze) was an Austrian-American art historian, one of the first women to study art history, a strong supporter of contemporary art in Vienna and an art historian specializing in Renaissance art and the Venetian school drawings.

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Extension theorem may refer to: