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On Oscillation of Complex Linear Differential Systems
Donald F. St. Mary
Proceedings of the American Mathematical Society
Vol. 36, No. 1 (Nov., 1972), pp. 191-194
Published by: American Mathematical Society
Stable URL: http://www.jstor.org/stable/2039058
Page Count: 4
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This paper is concerned with first order linear matrix differential equations defined in the complex plane; such a system is said to be oscillatory in a domain D, if each component of a vector solution has a zero in D. It is shown that some sufficient conditions for nonoscillation on the real line, recently developed by Z. Nehari, can be extended to the plane.
Proceedings of the American Mathematical Society © 1972 American Mathematical Society