Maria Hasse facts for kids
Maria-Viktoria Hasse (born May 30, 1921 – died January 10, 2014) was an important German mathematician. She made history by becoming the first female professor in the math and science department at TU Dresden. Maria-Viktoria Hasse wrote books about set theory and category theory. She is also famous for her work on the Gallai–Hasse–Roy–Vitaver theorem, which is used in graph coloring.
Her Education and Career
Maria-Viktoria Hasse was born in a town called Warnemünde, Germany. She went to high school in Rostock. From 1940 to 1943, she studied mathematics, physics, and philosophy. She attended universities in Rostock and Tübingen.
In 1943, she earned her diploma from the University of Rostock. She continued her studies there. In 1949, she earned her doctorate degree. She then completed a higher degree called a habilitation in 1954. Her early research focused on complex math problems like "singular integral equations."
In 1954, Maria-Viktoria Hasse became a professor of algebra at TU Dresden. She taught there for many years. She retired from her teaching position in 1981.
Her Important Work
Maria-Viktoria Hasse wrote several important math books. With another mathematician, Lothar Michler, she wrote Theorie der Kategorien in 1966. This book was about category theory, a way to study mathematical structures.
She also wrote Grundbegriffe der Mengenlehre und Logik in 1968. This book covered the basic ideas of set theory and logic. Set theory is about collections of objects.
One of her most famous contributions is to the Gallai–Hasse–Roy–Vitaver theorem. This theorem is used in graph coloring. Imagine you have a map or a network. Graph coloring is about finding the fewest colors needed to color different parts so that no two connected parts have the same color.
The theorem helps connect how you color the points (vertices) of a graph with how you draw arrows on its lines (edges). It says that the smallest number of colors you need is related to the longest path you can find in a special way. This theorem was published by Hasse and others independently in the 1960s. Her version of the result came out in 1965.
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