
doi: 10.1007/bf01060376
See the review in Zbl 0669.47022.
Weyl function, Linear accretive operators, dissipative operators, etc., closed Hilbert space operator, maximal sectorial operators, abstract bounded conditions, Sturm-Liouville theory, characteristic function, Ordinary differential operators, extension of a positive operator, semiangle, Subnormal operators, hyponormal operators, etc., Sturm-Liouville problems
Weyl function, Linear accretive operators, dissipative operators, etc., closed Hilbert space operator, maximal sectorial operators, abstract bounded conditions, Sturm-Liouville theory, characteristic function, Ordinary differential operators, extension of a positive operator, semiangle, Subnormal operators, hyponormal operators, etc., Sturm-Liouville problems
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 15 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
