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47B25 Symmetric and selfadjoint operators (unbounded) (17 articles)

• Lu, Guanghui; Wang, Dinghuai: Characterizations of commutators of the Hardy-Littlewood maximal function on Triebel-Lizorkin spaces. (English). Czechoslovak Mathematical Journal, vol. 73 (2023), issue 2, pp. 513-524
• Rossini, Alex Ferreira: On the spectrum of Robin Laplacian in a planar waveguide. (English). Czechoslovak Mathematical Journal, vol. 69 (2019), issue 2, pp. 485-501
• Yao, Siqin; Sun, Jiong; Zettl, Anton: The Sturm-Liouville Friedrichs extension. (English). Applications of Mathematics, vol. 60 (2015), issue 3, pp. 299-320
• Bahri, S. M.: On the localization of the spectrum for quasi-selfadjoint extensions of a Carleman operator. (English). Mathematica Bohemica, vol. 137 (2012), issue 3, pp. 249-258
• Hasil, Petr: Criterion of $p$-criticality for one term $2n$-order difference operators. (English). Archivum Mathematicum, vol. 47 (2011), issue 2, pp. 99-109
• Hilscher, Roman Šimon; Zemánek, Petr: Friedrichs extension of operators defined by linear Hamiltonian systems on unbounded interval. (English). Mathematica Bohemica, vol. 135 (2010), issue 2, pp. 209-222
• Allahverdiev, B. P.: Extensions, dilations and functional models of infinite Jacobi matrix. (English). Czechoslovak Mathematical Journal, vol. 55 (2005), issue 3, pp. 593-609
• Milatovic, Ognjen: On $m$-sectorial Schrödinger-type operators with singular potentials on manifolds of bounded geometry. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 45 (2004), issue 1, pp. 91-100
• Kucerovsky, Dan: Remark on an operator inequality. (English). Mathematica Slovaca, vol. 51 (2001), issue 2, pp. 229-230
• Prato, Giuseppe Da; Tubaro, Luciano: Some results about dissipativity of Kolmogorov operators. (English). Czechoslovak Mathematical Journal, vol. 51 (2001), issue 4, pp. 685-699
• Dragomir, Sever Silvestru; Mond, Bertram; Pečarić, Josip E.: On Jensen's inequality for self-adjoint operators in Hilbert space. (English). Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, vol. 34 (1995), issue 1, pp. 7-13
• Herrmann, Leopold: A study of an operator arising in the theory of circular plates. (English). Aplikace matematiky, vol. 33 (1988), issue 5, pp. 337-353
• Ricker, Werner: Spectral representation of local semigroups in locally convex spaces. (English). Czechoslovak Mathematical Journal, vol. 35 (1985), issue 2, pp. 248-259
• Kolomý, Josef: On determination of eigenvalues and eigenvectors of selfadjoint operators. (English). Aplikace matematiky, vol. 26 (1981), issue 3, pp. 161-170
• Najzar, Karel: Error-estimates for the method of least squares of finding eigenvalues and eigenfunctions. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 11 (1970), issue 3, pp. 463-479
• Najzar, Karel: On the method of least squares of finding eigenvalues and eigenfunctions of some symmetric operators. II. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 11 (1970), issue 3, pp. 449-462
• Najzar, Karel: Stability of the method of least squares for finding the eigenvalues of a symmetric operator. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 11 (1970), issue 4, pp. 641-655