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Limit circle criteria for fourth order differential operators with an oscillatory coefficient
Published online by Cambridge University Press: 20 January 2009
Extract
A formally self-adjoint operator L is said to be of limit circle type at infinity if its highest order coefficients are zero-free and all solutions x of L(x) = 0 are square-integrable on [c, ∞) for some c. (We will drop “at infinity” in what follows.)
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- Copyright © Edinburgh Mathematical Society 1981
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