Systems-conjugate and focal points of fourth order nonselfadjoint differential equations
Author:
Sui Sun Cheng
Journal:
Trans. Amer. Math. Soc. 223 (1976), 155-165
MSC:
Primary 34C10
DOI:
https://doi.org/10.1090/S0002-9947-1976-0473334-3
MathSciNet review:
0473334
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Abstract | References | Similar Articles | Additional Information
Abstract: Systems-conjugate points have been studied by John Barrett in relation to selfadjoint fourth order differential equations of the form . This paper extends his results to the general nonselfadjoint fourth order differential equation via a system of second order equations.
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Additional Information
DOI:
https://doi.org/10.1090/S0002-9947-1976-0473334-3
Keywords:
System of second order differential equations,
systems-conjugate point,
systems-focal point,
-principal solutions,
reciprocal system,
comparison theorems
Article copyright:
© Copyright 1976
American Mathematical Society