Grigorii Fikhtengol'ts

Grigorii Mikhailovich Fikhtengol'ts (Григо́рий Миха́йлович Фихтенго́льц, Григорій Михайлович Фіхтенгольц; 8 June 1888 – 26 June 1959) was a Soviet mathematician working on real analysis and functional analysis. Fikhtengol'ts was one of the founders of the Leningrad school of real analysis.

He was born in Odessa, Russian Empire in 1888, and graduated Odessa University in 1911.

He authored a three-volume textbook titled "A Course of Differential and Integral Calculus". The textbook covers mathematical analysis of functions of one real variable, functions of many real variables, and complex functions. Due to the depth and precision of the material's presentation, the book holds a classical position in the mathematical literature. It has been translated into several languages, including German, Polish, Chinese, Vietnamese, and Persian. However, no English translation has been completed yet.

Fikhtengol'ts's books on analysis are widely used in Middle and Eastern European, as well as Chinese universities, due to their exceptionally detailed and well-organized presentation of material on mathematical analysis. For unknown reasons, these books have not gained the same level of fame in universities in other parts of the world.

He was an Invited Speaker of the ICM in 1924 in Toronto.

Leonid Kantorovich and Isidor Natanson were among his students.