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Hans Hefer (born on 27 February 1907[1] and died on 22 November 1941, Eastern Front[2]) was a German mathematician who worked on several complex variables. Hefer's lemma or Hefer's theorem bear his name.[3][4]
Life
editThere is not sufficient documentation regarding the life of Hans Hefer. Hefer is known to have earned a Ph.D. at the University of Münster in 1941, supervised by Heinrich Behnke.[2][5]
In a posthumous publication made by Karl Stein and Heinrich Benke with Hefer's name in Mathematische Annalen in 1950/51, it was written in a footnote that the author had fallen in the East and the article is an excerpt from his dissertation which he defended in 1940.[6] It was also added there that Since 1941, papers by K. Oka and H. Cartan have appeared that contain Hefer's result but use different proofs.
References
edit- ^ Hartmann, Uta (2009). Heinrich Behnke (1898-1979): zwischen Mathematik und deren Didaktik (in German). Lang. p. 338. ISBN 9783631588604. Retrieved 11 November 2024.
- ^ a b "A Mathematische Dissertationen bis 1945" (PDF). Universität Münster Fachbereich Mathematik und Informatik. Retrieved 22 October 2024.--A list of mathematics doctoral degrees until 1945 awarded by University of Münster's mathematics and informatics department.
- ^ Boas, Harold. "Math 685 Notes Topics in Several Complex Variables" (PDF). Retrieved 19 September 2024.
- ^ Krantz, Steven George (2001). Function Theory of Several Complex Variables. American Mathematical Soc. ISBN 9780821827246.
- ^ Hans Hefer at the Mathematics Genealogy Project
- ^ Hans Hefer (1950–51). "Zur Funktionentheorie mehrerer Veränderlichen. Über eine Zerlegung analytischer Funktionen und die Weilsche Integraldarstellung". Mathematische Annalen. 122 (3): 276–278. doi:10.1007/BF01342970. Retrieved 22 October 2024.
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