On the estimate for the second derivative of the difference of partial sums arising by selfadjoint Sturm-Liouville operators

DOI10.1007/BF01896287zbMath0656.41025MaRDI QIDQ1110020

N. H. Loi

Publication date: 1987

Published in: Periodica Mathematica Hungarica (Search for Journal in Brave)

zbMATH Keywords

eigenfunctionsSturm-Liouville operatorFourier seriesselfadjoint operatorexact estimate

Mathematics Subject Classification ID

Asymptotic approximations, asymptotic expansions (steepest descent, etc.) (41A60) Rate of convergence, degree of approximation (41A25)

Cites Work

• Estimate for the difference of the first derivatives of partial sums arising by non-selfadjoint Sturm-Liouville operators
• Estimate for the difference of the second derivative of partial sums arising by non-negative selfadjoint extensions of sturm-liouville operators
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