Schechter, Martin The invariance principle. (English) Zbl 0444.47015 Comment. Math. Helv. 54, 111-125 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 47A40 Scattering theory of linear operators Keywords:wave operator; invariance principle PDFBibTeX XMLCite \textit{M. Schechter}, Comment. Math. Helv. 54, 111--125 (1979; Zbl 0444.47015) Full Text: DOI EuDML