Halperin, Israel Closures and adjoints of linear differential operators. (English) Zbl 0018.36603 Ann. Math. (2) 38, 880-919 (1937). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 8 Documents Keywords:Functional analysis, function spaces PDFBibTeX XMLCite \textit{I. Halperin}, Ann. Math. (2) 38, 880--919 (1937; Zbl 0018.36603) Full Text: DOI