The deficiency index problem of a singular linear Dirac differential system is studied in this paper. Several criterion are presented under which the linear Dirac systems are in the limitpoint case or the strong limit-point case. Some of results extensively generalize and improve the previous result
Levinson's limit-point criterion and powers
โ Scribed by W.D Evans; A Zettl
- Book ID
- 103196845
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 501 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0022-247X
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๐ SIMILAR VOLUMES
## Abstract This paper deals with singular Hamiltonian differential systems. Three conditions on the asymptotic behavior or square integrability of their maximal domain functions at a singular end point are studied: the limit point condition, the strong limit point condition and the Dirichlet condi
In the 1960, professor Doob proved that iff(z) is a meromorphic function on a disk D, then at almost every point of the perimeter of D either (a) f has both an angular limit and an equal fine limit, (b) f has every point of the plane as cluster value in every angle opening into D with vertex at the