Problems of the spectral theory of the second order linear differential equation with unbounded operator coefficients

1972 ◽  
Vol 23 (1) ◽  
pp. 1-11 ◽  
Author(s):  
V. I. Gorbachuk ◽  
M. L. Gorbachuk
Keyword(s):  
Differential Equation ◽  
Linear Differential Equation ◽  
Spectral Theory ◽  
Unbounded Operator ◽  
Second Order ◽  
Order Linear Differential Equation ◽  
Order Linear ◽  
Linear Differential

A property of the asymptotic series for a class of Titchmarsh–Weyl m-functions

1986 ◽  
Vol 102 (3-4) ◽  
pp. 253-257 ◽  
Author(s):  
B. J. Harris
Keyword(s):  
Differential Equation ◽  
Asymptotic Expansion ◽  
Linear Differential Equation ◽  
Asymptotic Series ◽  
Second Order ◽  
Order Linear Differential Equation ◽  
Order Linear ◽  
The Real ◽  
Linear Differential ◽  
Image Position

SynopsisIn an earlier paper [6] we showed that if q ϵ CN[0, ε) for some ε > 0, then the Titchmarsh–Weyl m(λ) function associated with the second order linear differential equationhas the asymptotic expansionas |A| →∞ in a sector of the form 0 < δ < arg λ < π – δ.We show that if the real valued function q admits the expansionin a neighbourhood of 0, then

Sign in / Sign up

Export Citation Format

Share Document