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- W2328195005 abstract "In this paper we deal with the number of zeros of a solution of the n th order linear differential equation 1.1 where the functions p j (z) ( j = 0, 1, …, n – 2) are assumed to be regular in a given domain D of the complex plane. The differential equation (1.1) is called disconjugate in D, if no (non-trivial) solution of (1.1) has more than ( n – 1) zeros in D. (The zeros are counted by their multiplicity.) The ideas of this paper are related to those of Nehari ( 7; 9 ) on second order differential equations. In ( 7 ), he pointed out the following basic relationship. The function 1.2 where y 1 ( z ) and y 2 ( z ) are two linearly independent solutions of 1.3 is univalent in D, if and only if no solution of equation (1.3) has more than one zero in D, i.e., if and only if (1.3) is disconjugate in D." @default.
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- W2328195005 date "1969-01-01" @default.
- W2328195005 modified "2023-09-29" @default.
- W2328195005 title "The Schwarzian Derivative and Disconjugacy of nth order Linear Differential Equations" @default.
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- W2328195005 doi "https://doi.org/10.4153/cjm-1969-023-9" @default.
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