Title: The deficiency index problem for powers of ordinary differential expressions
First published: 1977
Subjects: Differential operators, Boundary value problems, Weyl theory, Potenz, Potenz (Mathematik), Differentialform, Differentialgleichung, Singularitat, Theorie de Weyl, Problemes aux limites, Singularitat (Mathematik), Operateurs differentiels, Differentialoperator
LC classification: QA3 .L28 no. 621, QA379 .L28 no. 621