Cahit Arf

<!--  Cahit Arf, probably in front of [[Middle East Technical University|METU]] Department of Mathematics. --> Cahit Arf (; 24 October 1910 – 26 December 1997) was a Turkish mathematician. He is known for the Arf invariant of a quadratic form in characteristic 2 (applied in knot theory and surgery theory) in topology, the Hasse–Arf theorem in ramification theory, Arf semigroups and Arf rings. Provided by Wikipedia
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    by Arf, Cahit, 1910-
    Published 1990
    Book
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