Kreĭn, M. G.; Krasnosel’skiĭ, M. A. Fundamental theorems on the extension of Hermitian operators and certain of their applications to the theory of orthogonal polynomials and the problem of moments. (Russian) Zbl 1460.47011 Usp. Mat. Nauk 2, No. 3(19), 60-106 (1947). MSC: 47B15 46C99 47A57 47B25 PDFBibTeX XMLCite \textit{M. G. Kreĭn} and \textit{M. A. Krasnosel'skiĭ}, Usp. Mat. Nauk 2, No. 3(19), 60--106 (1947; Zbl 1460.47011) Full Text: MNR
Truesdell, C. On the functional equation \(\partial F(z,\alpha)/\partial z=F(z,\alpha +1)\). (English) Zbl 0031.39101 Proc. Natl. Acad. Sci. USA 33, 82-93 (1947). Reviewer: Oberhettinger (Pasadena) MSC: 33C45 39B05 PDFBibTeX XMLCite \textit{C. Truesdell}, Proc. Natl. Acad. Sci. USA 33, 82--93 (1947; Zbl 0031.39101) Full Text: DOI
Geronimus, J. The orthogonality of some systems of polynomials. (English) Zbl 0029.39103 Duke Math. J. 14, 503-510 (1947). Reviewer: J. Meixner (Aachen) MSC: 33C45 42C05 PDFBibTeX XMLCite \textit{J. Geronimus}, Duke Math. J. 14, 503--510 (1947; Zbl 0029.39103) Full Text: DOI
Kreĭn, M. G. The theory of self-adjoint extensions of semi-bounded Hermitian transformations and its applications. I. (Теория самосопряженных расширений полуограниченных эрмитовых операторов и ее приложения. I.) (Russian. English summary) Zbl 0029.14103 Mat. Sb., N. Ser. 20(62), 431-495 (1947). MSC: 47B15 46C99 47A57 47B25 PDFBibTeX XMLCite \textit{M. G. Kreĭn}, Mat. Sb., Nov. Ser. 20(62), 431--495 (1947; Zbl 0029.14103) Full Text: EuDML