Josif Shtokalo

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Josif Zakharovich Shtokalo (Ukrainian: Йосип Захарович Штокало) was a Ukrainian mathematician who lived from November 16, 1897, to January 5, 1987. He made important contributions in differential equations, operational calculus, and the history of mathematics. He is known for Shtokalo’s method, a technique used in studying differential equations.