Josif Shtokalo

Josif Zakharovich Shtokalo (Ukrainian: Йосип Захарович Штокало, romanized: Yosyp Zakharovych Shtokalo; November 16, 1897 – January 5, 1987) was a famous Ukrainian mathematician. Shtokalo worked mainly in the areas of differential equations, operational calculus and the history of mathematics.^[1]

Investigation of the Stability of Lindstedt's Equation Using Shtokalo’s Method by Samuel Kohn contains a description of Shotkalo's method in English.^[2]

References

^ "Josif Zakharovich Shtokalo - Biography". MacTutor History of Mathematics archive. Retrieved 2022-07-21.
^ Kohn, Samuel (1976-06-01). "Investigation of the Stability of ${\frac {d^{2}y}{dt^{2}}}+\omega ^{2}y=\varepsilon \left(\sum \nolimits _{i=1}^{n}{b_{i}\cos 2a_{i}t}\right)y$ Using Shtokalo's Method". SIAM Journal on Applied Mathematics. 30 (4): 749–767. doi:10.1137/0130068. ISSN 0036-1399.

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[biography-1] "Josif Zakharovich Shtokalo - Biography". MacTutor History of Mathematics archive. Retrieved 2022-07-21.

[stability-2] Kohn, Samuel (1976-06-01). "Investigation of the Stability of ${\frac {d^{2}y}{dt^{2}}}+\omega ^{2}y=\varepsilon \left(\sum \nolimits _{i=1}^{n}{b_{i}\cos 2a_{i}t}\right)y$ Using Shtokalo's Method". SIAM Journal on Applied Mathematics. 30 (4): 749–767. doi:10.1137/0130068. ISSN 0036-1399.

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