A. A. Kirillov

A. A. Kirillov was a prominent Russian mathematician renowned for his work in representation theory, specifically in understanding symmetries and group actions. His research helped develop methods to analyze how mathematical objects, like functions and equations, behave under transformations. Kirillov contributed to areas such as Lie groups, Lie algebras, and quantum physics, making complex concepts more accessible and applicable in physics and mathematics. His work has had a lasting impact on modern theoretical understanding of symmetry in natural laws and various mathematical structures.