Factorization of operators. Theory and applications
This paper gives a survey of the development of Krein's method of factorization and its applications. This includes integral operators as well as abstract operators in Hilbert space, inverse problems of spectral theory, nonlinear equations integrable by the method of the inverse problem and other cases. In the paper one finds systematization of these results.
nonlinear equations integrable by the method of the inverse problem
scientific article; zbMATH DE number 803833
scientific article