Record number :
932097
Title of article :
Relative Oscillation]Non-Oscillation Criteria for Perturbed Periodic Dirac Systems
Author/Authors :
* and Karl Michael Schmidt†، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2000
Pages :
17
From page :
591
To page :
607
Abstract :
Under minimal hypotheses, sufficient criteria for a perturbed Dirac system to be relatively oscillatory or non-oscillatory at ` with respect to a reference equation with periodic coefficients are proved my means of an asymptotic analysis of generalized Pr¨ufer angles. As illustrated by an example, they help decide whether the number of eigenvalues in gaps of the essential spectrum is finite or infinite. The critical perturbations naturally occur in the partial-wave analysis of spherically symmetric Dirac operators.
Journal title :
Journal of Mathematical Analysis and Applications
Link To Document :