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Cognomen Dynkin (登金 , Dynkin , Дынкин ) , in the world, is a rare last name. The last name Dynkin is habitual in Russia, where it is a rare surname, Belarus, where it is a very rare surname, and Kazakhstan. Measured by absolute frequency, the name is most common in Russia, China, and the United States. More prevalently, Dynkin is the forename as well as the last name.