Density of images of semigroup operators for linear neutral functional differential equations

DOI10.1016/0022-0396(80)90002-9zbMath0419.34063OpenAlexW2028153394MaRDI QIDQ1132258

Zbigniew Bartosiewicz

Publication date: 1980

Published in: Journal of Differential Equations (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/0022-0396(80)90002-9

zbMATH Keywords

semigroup of operatorsneutral systemcompleteness of eigenfunctions

Mathematics Subject Classification ID

Sobolev spaces and other spaces of ``smooth functions, embedding theorems, trace theorems (46E35) Linear ordinary differential equations and systems (34A30) General theory of functional-differential equations (34K05)

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