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

1. "Josif Zakharovich Shtokalo - Biography". MacTutor History of Mathematics archive. Archived from the original on 2022-05-16. Retrieved 2022-07-21.
2. Kohn, Samuel (1976-06-01). "Investigation of the Stability of ${\displaystyle {\frac {d^{2}y}{dt^{2}}}+\omega ^{2}y=\varepsilon \left(\sum \nolimits _{i=1}^{n}{b_{i}\cos 2a_{i}t}\right)y}$ Using Shtokalo's Method". SIAM Journal on Applied Mathematics. 30 (4): 749–767. doi:10.1137/0130068. ISSN 0036-1399.