Helmut Hasse
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Helmut Hasse was a German mathematician working in algebraic number theory, known for fundamental contributions to class field theory, the application of p-adic numbers to local class field theory and
Helmut Hasse
Hasse with Emil Artin in 1930
Cahit Arf
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Cahit Arf was a Turkish mathematician. He is known for the Arf invariant of a quadratic form in characteristic 2 in topology, the Hasse–Arf theorem in ramification theory, Arf semigroups and Arf rings
Helmut Hasse
…in particular with Emmy Noether and Richard Brauer on simple algebras, and with Harold Davenport on Gauss sums (Hasse–Davenport relations), and with Cahit Arf on the Hasse–Arf theorem. Leopoldt, Heinrich-Wolfgang; Roquette, Peter, eds. (1975), Helmut Hasse: Mathematische Abhandlungen, de Gruyter (3 vols…
Cahit Arf 10 lira
Reverse of the 10 lira banknote (2009)
Gravestone of Cahit Arf, Zincirlikuyu Cemetery, Istanbul