Fredholm properties and interpolation of families of Banach spaces
The following properties of an operator \(T\) are considered: \(\dim\text{ker }T<\infty\), \(T\) has closed range, \(T\) is a Fredholm operator and some other ones. Some theorems on stability of such properties of operators in interpolation spaces under small changes of parameters of interpolation are proved.
scientific article; zbMATH DE number 118427