Qi, Jiangang; Xie, Bing Extremum estimates of the \(L^1\)-norm of weights for eigenvalue problems of vibrating string equations based on critical equations. (English) Zbl 07360590 Discrete Contin. Dyn. Syst., Ser. B 26, No. 7, 3505-3516 (2021). MSC: 34B24 34L15 PDF BibTeX XML Cite \textit{J. Qi} and \textit{B. Xie}, Discrete Contin. Dyn. Syst., Ser. B 26, No. 7, 3505--3516 (2021; Zbl 07360590) Full Text: DOI
Zhang, Hao; Izuhara, Hirofumi; Wu, Yaping Asymptotic stability of two types of traveling waves for some predator-prey models. (English) Zbl 07360369 Discrete Contin. Dyn. Syst., Ser. B 26, No. 4, 2323-2342 (2021). MSC: 35C07 35B35 35K57 47A75 34L16 PDF BibTeX XML Cite \textit{H. Zhang} et al., Discrete Contin. Dyn. Syst., Ser. B 26, No. 4, 2323--2342 (2021; Zbl 07360369) Full Text: DOI
Mosazadeh, Seyfollah Inverse Sturm-Liouville problems with two supplementary discontinuous conditions on two symmetric disjoint intervals. (English) Zbl 07359870 Comput. Methods Differ. Equ. 9, No. 1, 244-257 (2021). MSC: 34B05 34A55 34L10 47E05 PDF BibTeX XML Cite \textit{S. Mosazadeh}, Comput. Methods Differ. Equ. 9, No. 1, 244--257 (2021; Zbl 07359870) Full Text: DOI
Gawȩdzki, Krzysztof; Kozłowski, Karol K. Large deviations of energy transfers in nonequilibrium CFT and asymptotics of non-local Riemann-Hilbert problems. (English) Zbl 07358967 Anal. Math. Phys. 11, No. 2, Paper No. 95, 89 p. (2021). MSC: 34L PDF BibTeX XML Cite \textit{K. Gawȩdzki} and \textit{K. K. Kozłowski}, Anal. Math. Phys. 11, No. 2, Paper No. 95, 89 p. (2021; Zbl 07358967) Full Text: DOI
Landry, Therese-Marie; Lapidus, Michel L.; Latrémolière, Frédéric Metric approximations of spectral triples on the Sierpiński gasket and other fractal curves. (English) Zbl 07358508 Adv. Math. 385, Article ID 107771, 43 p. (2021). MSC: 46L89 46L87 46L30 58B34 34L40 53C22 58B20 58C40 81R60 28A80 PDF BibTeX XML Cite \textit{T.-M. Landry} et al., Adv. Math. 385, Article ID 107771, 43 p. (2021; Zbl 07358508) Full Text: DOI
Savchuk, A. M.; Sadovnichaya, I. V. Equiconvergence of spectral decompositions for Sturm-Liouville operators: triples of Lebesgue spaces. (English) Zbl 07357850 Lobachevskii J. Math. 42, No. 5, 1027-1052 (2021). MSC: 34B24 34L05 34L10 PDF BibTeX XML Cite \textit{A. M. Savchuk} and \textit{I. V. Sadovnichaya}, Lobachevskii J. Math. 42, No. 5, 1027--1052 (2021; Zbl 07357850) Full Text: DOI
Rykhlov, V. S. On eigenfunction expansions for a class of irregular quadratic pencils of second-order differential operators. (English) Zbl 07357849 Lobachevskii J. Math. 42, No. 5, 1014-1026 (2021). MSC: 34L10 47A05 PDF BibTeX XML Cite \textit{V. S. Rykhlov}, Lobachevskii J. Math. 42, No. 5, 1014--1026 (2021; Zbl 07357849) Full Text: DOI
Nonnenmacher, Stéphane; Vogel, Martin Local eigenvalue statistics of one-dimensional random nonselfadjoint pseudodifferential operators. (English) Zbl 07357358 J. Eur. Math. Soc. (JEMS) 23, No. 5, 1521-1612 (2021). MSC: 35P20 34L05 60H25 47B80 35S05 PDF BibTeX XML Cite \textit{S. Nonnenmacher} and \textit{M. Vogel}, J. Eur. Math. Soc. (JEMS) 23, No. 5, 1521--1612 (2021; Zbl 07357358) Full Text: DOI
Sakhnovich, Alexander On the class of canonical systems corresponding to matrix string equations: general-type and explicit fundamental solutions and Weyl-Titchmarsh theory. (English) Zbl 07356682 Doc. Math. 26, 583-615 (2021). MSC: 34A05 34B20 34L40 37J06 46N20 81Q05 PDF BibTeX XML Cite \textit{A. Sakhnovich}, Doc. Math. 26, 583--615 (2021; Zbl 07356682) Full Text: DOI
Bartels, Casey; Currie, Sonja; Watson, Bruce A. Sturm-Liouville problems with transfer condition Herglotz dependent on the eigenparameter: eigenvalue asymptotics. (English) Zbl 07355473 Complex Anal. Oper. Theory 15, No. 4, Paper No. 71, 29 p. (2021). MSC: 34B24 34L20 PDF BibTeX XML Cite \textit{C. Bartels} et al., Complex Anal. Oper. Theory 15, No. 4, Paper No. 71, 29 p. (2021; Zbl 07355473) Full Text: DOI
Khristichenko, M. Yu.; Nechepurenko, Yu. M. Computation of periodic solutions to models of infectious disease dynamics and immune response. (English) Zbl 07354774 Russ. J. Numer. Anal. Math. Model. 36, No. 2, 87-99 (2021). MSC: 92 34K10 65L07 37N25 34K28 34L16 PDF BibTeX XML Cite \textit{M. Yu. Khristichenko} and \textit{Yu. M. Nechepurenko}, Russ. J. Numer. Anal. Math. Model. 36, No. 2, 87--99 (2021; Zbl 07354774) Full Text: DOI
Gesztesy, Fritz; Nichols, Roger; Stanfill, Jonathan A survey of some norm inequalities. (English) Zbl 07352441 Complex Anal. Oper. Theory 15, No. 2, Paper No. 23, 34 p. (2021). MSC: 47A30 34L40 47B25 47B44 PDF BibTeX XML Cite \textit{F. Gesztesy} et al., Complex Anal. Oper. Theory 15, No. 2, Paper No. 23, 34 p. (2021; Zbl 07352441) Full Text: DOI
Borthwick, David; Corsi, Livia; Jones, Kenny Sharp diameter bound on the spectral gap for quantum graphs. (English) Zbl 07352290 Proc. Am. Math. Soc. 149, No. 7, 2879-2890 (2021). MSC: 81Q35 81Q10 34L40 34B45 34L05 PDF BibTeX XML Cite \textit{D. Borthwick} et al., Proc. Am. Math. Soc. 149, No. 7, 2879--2890 (2021; Zbl 07352290) Full Text: DOI
Ercan, Ahu; Ozarslan, Ramazan; Bas, Erdal Existence and uniqueness analysis of solutions for Hilfer fractional spectral problems with applications. (English) Zbl 07351832 Comput. Appl. Math. 40, No. 1, Paper No. 5, 18 p. (2021). MSC: 34A08 34A12 34B24 34L05 PDF BibTeX XML Cite \textit{A. Ercan} et al., Comput. Appl. Math. 40, No. 1, Paper No. 5, 18 p. (2021; Zbl 07351832) Full Text: DOI
Zhang, Yalin Spectral properties of exterior transmission problem for spherically stratified anisotropic media. (English) Zbl 07350898 Appl. Anal. 100, No. 8, 1668-1692 (2021). MSC: 34B09 34L15 34L25 78A45 78A46 PDF BibTeX XML Cite \textit{Y. Zhang}, Appl. Anal. 100, No. 8, 1668--1692 (2021; Zbl 07350898) Full Text: DOI
Mamedov, Khanlar R.; Hashimoglu, Ilyas On the expansion formula for a class of Sturm-Liouville operators. (English) Zbl 07350135 Lobachevskii J. Math. 42, No. 3, 579-586 (2021). MSC: 34L25 34B24 PDF BibTeX XML Cite \textit{K. R. Mamedov} and \textit{I. Hashimoglu}, Lobachevskii J. Math. 42, No. 3, 579--586 (2021; Zbl 07350135) Full Text: DOI
Tulenov, K. S.; Zhumanova, L. K. An abstract theorem on completeness of systems of root vectors of correct restrictions. (English) Zbl 07348546 Adv. Oper. Theory 6, No. 2, Paper No. 36, 17 p. (2021). MSC: 47A05 34B05 47B25 34B09 34L10 35P05 35P10 34L05 34B24 PDF BibTeX XML Cite \textit{K. S. Tulenov} and \textit{L. K. Zhumanova}, Adv. Oper. Theory 6, No. 2, Paper No. 36, 17 p. (2021; Zbl 07348546) Full Text: DOI
An, JinMyong; Kim, JinMyong Local well-posedness for the inhomogeneous nonlinear Schrödinger equation in \(H^s ( \mathbb{R}^n )\). (English) Zbl 07347905 Nonlinear Anal., Real World Appl. 59, Article ID 103268, 21 p. (2021). MSC: 35Q 35P 35 34L PDF BibTeX XML Cite \textit{J. An} and \textit{J. Kim}, Nonlinear Anal., Real World Appl. 59, Article ID 103268, 21 p. (2021; Zbl 07347905) Full Text: DOI
Yang, Chuan-fu; Wang, Feng; Huang, Zhen-you Ambarzumyan theorems for Dirac operators. (English) Zbl 07347336 Acta Math. Appl. Sin., Engl. Ser. 37, No. 2, 287-298 (2021). Reviewer: Vjacheslav Yurko (Saratov) MSC: 34A55 34L40 47E05 PDF BibTeX XML Cite \textit{C.-f. Yang} et al., Acta Math. Appl. Sin., Engl. Ser. 37, No. 2, 287--298 (2021; Zbl 07347336) Full Text: DOI
Li, Jing; Wang, Mengran Spectral problem and initial value problem of a nonlocal Sturm-Liouville equation. (English) Zbl 07345491 Qual. Theory Dyn. Syst. 20, No. 2, Paper No. 28, 22 p. (2021). MSC: 34B24 34A08 34L15 34L10 34B10 34D10 47E05 PDF BibTeX XML Cite \textit{J. Li} and \textit{M. Wang}, Qual. Theory Dyn. Syst. 20, No. 2, Paper No. 28, 22 p. (2021; Zbl 07345491) Full Text: DOI
Liu, Yixuan; Shi, Guoliang; Yan, Jun Dependence of solutions and eigenvalues of third order linear measure differential equations on measures. (English) Zbl 07344714 Sci. China, Math. 64, No. 3, 479-506 (2021). MSC: 34A06 34A30 34B09 34L15 PDF BibTeX XML Cite \textit{Y. Liu} et al., Sci. China, Math. 64, No. 3, 479--506 (2021; Zbl 07344714) Full Text: DOI
Boumaza, H.; Lafitte, O. Integrated density of states: from the finite range to the periodic Airy-Schrödinger operator. (English) Zbl 07343831 J. Math. Phys. 62, No. 4, 043503, 22 p. (2021). MSC: 81Q10 81Q20 34L40 34L05 81Q80 82D25 82B30 PDF BibTeX XML Cite \textit{H. Boumaza} and \textit{O. Lafitte}, J. Math. Phys. 62, No. 4, 043503, 22 p. (2021; Zbl 07343831) Full Text: DOI
Sezer, Yonca; Bakşi, Özlem; Karayel, Serpil On higher regularized traces of a differential operator with bounded operator coefficient given in a finite interval. (English) Zbl 07343512 Mediterr. J. Math. 18, No. 3, Paper No. 90, 10 p. (2021). MSC: 47A10 34L20 34L05 PDF BibTeX XML Cite \textit{Y. Sezer} et al., Mediterr. J. Math. 18, No. 3, Paper No. 90, 10 p. (2021; Zbl 07343512) Full Text: DOI
Yagasaki, Kazuyuki; Yamazoe, Shotaro Numerical analyses for spectral stability of solitary waves near bifurcation points. (English) Zbl 07343401 Japan J. Ind. Appl. Math. 38, No. 1, 125-140 (2021). MSC: 65 34B09 34L16 35Q55 PDF BibTeX XML Cite \textit{K. Yagasaki} and \textit{S. Yamazoe}, Japan J. Ind. Appl. Math. 38, No. 1, 125--140 (2021; Zbl 07343401) Full Text: DOI
Grosu, Codruţ; Grosu, Corina The expansion of Wronskian Hermite polynomials in the Hermite basis. (English) Zbl 07343355 SIGMA, Symmetry Integrability Geom. Methods Appl. 17, Paper 003, 14 p. (2021). MSC: 26C10 30C15 34L40 PDF BibTeX XML Cite \textit{C. Grosu} and \textit{C. Grosu}, SIGMA, Symmetry Integrability Geom. Methods Appl. 17, Paper 003, 14 p. (2021; Zbl 07343355) Full Text: DOI
Deng, Da-Wen; Ngai, Sze-Man Estimates for sums and gaps of eigenvalues of Laplacians on measure spaces. (English) Zbl 07342507 Proc. R. Soc. Edinb., Sect. A, Math. 151, No. 2, 842-861 (2021). MSC: 35P15 28A80 35J05 35J25 34L16 65L15 65L60 PDF BibTeX XML Cite \textit{D.-W. Deng} and \textit{S.-M. Ngai}, Proc. R. Soc. Edinb., Sect. A, Math. 151, No. 2, 842--861 (2021; Zbl 07342507) Full Text: DOI
García-Ferrero, María Ángeles; Gómez-Ullate, David; Milson, Robert Exceptional Legendre polynomials and confluent Darboux Transformations. (English) Zbl 07342213 SIGMA, Symmetry Integrability Geom. Methods Appl. 17, Paper 016, 19 p. (2021). MSC: 33C47 34A05 34L10 PDF BibTeX XML Cite \textit{M. Á. García-Ferrero} et al., SIGMA, Symmetry Integrability Geom. Methods Appl. 17, Paper 016, 19 p. (2021; Zbl 07342213) Full Text: DOI
Shakhmurov, Veli Fractional abstract differential equations and applications. (English) Zbl 07340056 Bull. Malays. Math. Sci. Soc. (2) 44, No. 2, 1065-1078 (2021). MSC: 47Gxx 34L30 34A12 34A40 47Dxx 43Axx PDF BibTeX XML Cite \textit{V. Shakhmurov}, Bull. Malays. Math. Sci. Soc. (2) 44, No. 2, 1065--1078 (2021; Zbl 07340056) Full Text: DOI
Aliyev, Z. S.; Asadov, X. A. Global bifurcation from zero in some fourth-order nonlinear eigenvalue problems. (English) Zbl 07340051 Bull. Malays. Math. Sci. Soc. (2) 44, No. 2, 981-992 (2021). MSC: 34B09 34B24 34C23 34L15 34L30 47J10 47J15 PDF BibTeX XML Cite \textit{Z. S. Aliyev} and \textit{X. A. Asadov}, Bull. Malays. Math. Sci. Soc. (2) 44, No. 2, 981--992 (2021; Zbl 07340051) Full Text: DOI
Larkin, Nikolai A.; Luchesi, Jackson On connection between the order of a stationary one-dimensional dispersive equation and the growth of its convective term. (English) Zbl 07339917 Bol. Soc. Parana. Mat. (3) 39, No. 3, 157-175 (2021). MSC: 34L30 34B30 34B60 PDF BibTeX XML Cite \textit{N. A. Larkin} and \textit{J. Luchesi}, Bol. Soc. Parana. Mat. (3) 39, No. 3, 157--175 (2021; Zbl 07339917) Full Text: Link
Liang, Jinhao Large coupling asymptotics for the Lyapunov exponent of finitely smooth quasi-periodic Schrödinger operators. (English) Zbl 07339631 Nonlinearity 34, No. 4, 2116-2154 (2021). MSC: 37D25 39A70 34L40 PDF BibTeX XML Cite \textit{J. Liang}, Nonlinearity 34, No. 4, 2116--2154 (2021; Zbl 07339631) Full Text: DOI
Aktosun, Tuncay; Sacks, Paul; Xu, Xiao-Chuan An inverse problem to determine the shape of a human vocal tract. (English) Zbl 07337466 J. Comput. Appl. Math. 393, Article ID 113477, 24 p. (2021). MSC: 34C60 92F05 34A55 34L40 PDF BibTeX XML Cite \textit{T. Aktosun} et al., J. Comput. Appl. Math. 393, Article ID 113477, 24 p. (2021; Zbl 07337466) Full Text: DOI
Chen, Zhijie; Fu, Erjuan; Lin, Chang-Shou Spectrum of the Lamé operator and application. I: Deformation along \(\operatorname{Re} \tau = \frac{ 1}{ 2} \). (English) Zbl 07337388 Adv. Math. 383, Article ID 107699, 36 p. (2021). Reviewer: Rodica Luca (Iaşi) MSC: 34L05 34L40 35J91 33E10 47A10 PDF BibTeX XML Cite \textit{Z. Chen} et al., Adv. Math. 383, Article ID 107699, 36 p. (2021; Zbl 07337388) Full Text: DOI
Wen, Zhiyuan On principal eigenvalues of measure differential equations and a patchy Neumann eigenvalue problem. (English) Zbl 07336961 J. Differ. Equations 286, 710-730 (2021). MSC: 34L15 34L40 49R05 58C07 PDF BibTeX XML Cite \textit{Z. Wen}, J. Differ. Equations 286, 710--730 (2021; Zbl 07336961) Full Text: DOI
Xu, Xiao-Chuan Corrigendum to “Inverse spectral problems for the generalized Robin-Regge problem with complex coefficients”. (English) Zbl 07336163 J. Geom. Phys. 164, Article ID 104208, 1 p. (2021). MSC: 34A55 34B09 34L40 PDF BibTeX XML Cite \textit{X.-C. Xu}, J. Geom. Phys. 164, Article ID 104208, 1 p. (2021; Zbl 07336163) Full Text: DOI
Hatzizisis, Nicholas; Kamvissis, Spyridon Semiclassical WKB problem for the non-self-adjoint Dirac operator with a decaying potential. (English) Zbl 07333987 J. Math. Phys. 62, No. 3, 033510, 35 p. (2021). MSC: 81Q12 81Q20 81R20 34L40 34E05 35Q55 PDF BibTeX XML Cite \textit{N. Hatzizisis} and \textit{S. Kamvissis}, J. Math. Phys. 62, No. 3, 033510, 35 p. (2021; Zbl 07333987) Full Text: DOI
Hoffmann, Scott E. Unitary, continuum, stationary perturbation theory for the radial Schrödinger equation. (English) Zbl 07333956 J. Math. Phys. 62, No. 3, 032105, 10 p. (2021). MSC: 81Q05 81Q15 81U05 81R05 34L40 34B27 PDF BibTeX XML Cite \textit{S. E. Hoffmann}, J. Math. Phys. 62, No. 3, 032105, 10 p. (2021; Zbl 07333956) Full Text: DOI
Breuer, Jonathan Scaling limits of Jacobi matrices and the Christoffel-Darboux kernel. (English) Zbl 07333931 Constr. Approx. 53, No. 2, 349-379 (2021). MSC: 47B36 34L40 47E05 PDF BibTeX XML Cite \textit{J. Breuer}, Constr. Approx. 53, No. 2, 349--379 (2021; Zbl 07333931) Full Text: DOI
Lindsay, J. Martin; Wills, Stephen J. Quantum stochastic cocycles and completely bounded semigroups on operator spaces. II. (English) Zbl 07333678 Commun. Math. Phys. 383, No. 1, 153-199 (2021). MSC: 81Q35 05C05 34B45 34L05 81S25 60G20 60J25 60B15 60H10 81P20 PDF BibTeX XML Cite \textit{J. M. Lindsay} and \textit{S. J. Wills}, Commun. Math. Phys. 383, No. 1, 153--199 (2021; Zbl 07333678) Full Text: DOI
Andrews, Ben; Clutterbuck, Julie; Hauer, Daniel The fundamental gap for a one-dimensional Schrödinger operator with Robin boundary conditions. (English) Zbl 07332515 Proc. Am. Math. Soc. 149, No. 4, 1481-1493 (2021). MSC: 47A75 34B09 34B15 34L15 34L40 PDF BibTeX XML Cite \textit{B. Andrews} et al., Proc. Am. Math. Soc. 149, No. 4, 1481--1493 (2021; Zbl 07332515) Full Text: DOI
Feng, Hao; Meng, Gang Minimization of eigenvalues for the Camassa-Holm equation. (English) Zbl 07331734 Commun. Contemp. Math. 23, No. 4, Article ID 2050021, 9 p. (2021). Reviewer: Meirong Zhang (Beijing) MSC: 34L15 34L40 PDF BibTeX XML Cite \textit{H. Feng} and \textit{G. Meng}, Commun. Contemp. Math. 23, No. 4, Article ID 2050021, 9 p. (2021; Zbl 07331734) Full Text: DOI
Tanaka, Yohei A constructive approach to topological invariants for one-dimensional strictly local operators. (English) Zbl 1460.81029 J. Math. Anal. Appl. 500, No. 1, Article ID 125072, 22 p. (2021). MSC: 81Q10 34L40 34C14 81Q35 82C20 47A53 34L05 PDF BibTeX XML Cite \textit{Y. Tanaka}, J. Math. Anal. Appl. 500, No. 1, Article ID 125072, 22 p. (2021; Zbl 1460.81029) Full Text: DOI
Zemánek, Petr Eigenfunctions expansion for discrete symplectic systems with general linear dependence on spectral parameter. (English) Zbl 07330761 J. Math. Anal. Appl. 499, No. 2, Article ID 125054, 37 p. (2021). Reviewer: Yaudat Sultanaev (Ufa) MSC: 39A12 34L10 39A27 15B57 PDF BibTeX XML Cite \textit{P. Zemánek}, J. Math. Anal. Appl. 499, No. 2, Article ID 125054, 37 p. (2021; Zbl 07330761) Full Text: DOI
Schmid, Harald On the deformation of linear Hamiltonian systems. (English) Zbl 1460.35073 J. Math. Anal. Appl. 499, No. 2, Article ID 125051, 33 p. (2021). MSC: 35F20 34L05 PDF BibTeX XML Cite \textit{H. Schmid}, J. Math. Anal. Appl. 499, No. 2, Article ID 125051, 33 p. (2021; Zbl 1460.35073) Full Text: DOI
Schmidt, Heinz-Jürgen; Schnack, Jürgen; Holthaus, Martin Floquet theory of the analytical solution of a periodically driven two-level system. (English) Zbl 1460.81126 Appl. Anal. 100, No. 5, 992-1009 (2021). MSC: 81V80 34L40 33E30 33C15 PDF BibTeX XML Cite \textit{H.-J. Schmidt} et al., Appl. Anal. 100, No. 5, 992--1009 (2021; Zbl 1460.81126) Full Text: DOI
Baskakov, A. G.; Krishtal, I. A.; Uskova, N. B. Spectral properties of the Dirac operator on the real line. (English. Russian original) Zbl 07327880 Differ. Equ. 57, No. 2, 139-147 (2021); translation from Differ. Uravn. 57, No. 2, 153-161 (2021). MSC: 34L40 34L05 PDF BibTeX XML Cite \textit{A. G. Baskakov} et al., Differ. Equ. 57, No. 2, 139--147 (2021; Zbl 07327880); translation from Differ. Uravn. 57, No. 2, 153--161 (2021) Full Text: DOI
Mutlu, Gökhan On the quotient quantum graph with respect to the regular representation. (English) Zbl 1460.58019 Commun. Pure Appl. Anal. 20, No. 2, 885-902 (2021). MSC: 58J53 20C30 34L05 35P05 81Q50 PDF BibTeX XML Cite \textit{G. Mutlu}, Commun. Pure Appl. Anal. 20, No. 2, 885--902 (2021; Zbl 1460.58019) Full Text: DOI
Liu, Wencai Revisiting the Christ-Kiselev’s multi-linear operator technique and its applications to Schrödinger operators. (English) Zbl 07324152 Nonlinearity 34, No. 3, 1288-1315 (2021). Reviewer: Jiři Lipovský (Hradec Králové) MSC: 34L40 81Q10 34E20 PDF BibTeX XML Cite \textit{W. Liu}, Nonlinearity 34, No. 3, 1288--1315 (2021; Zbl 07324152) Full Text: DOI
Rybkin, Alexei The effect of a positive bound state on the KdV solution: a case study. (English) Zbl 07324151 Nonlinearity 34, No. 2, 1238-1261 (2021). MSC: 35Q53 35Q55 35A09 35P10 34L40 37K15 47B35 PDF BibTeX XML Cite \textit{A. Rybkin}, Nonlinearity 34, No. 2, 1238--1261 (2021; Zbl 07324151) Full Text: DOI
Afzal, Muhammad; Shafique, Sajid; Wahab, Abdul Analysis of traveling waveform of flexible waveguides containing absorbent material along flanged junctions. (English) Zbl 1456.74085 Commun. Nonlinear Sci. Numer. Simul. 97, Article ID 105737, 15 p. (2021). MSC: 74J20 35L05 34L25 34L10 47A75 65N25 PDF BibTeX XML Cite \textit{M. Afzal} et al., Commun. Nonlinear Sci. Numer. Simul. 97, Article ID 105737, 15 p. (2021; Zbl 1456.74085) Full Text: DOI
Namazov, Faiq Mirzali Uniform convergence of Fourier series expansions for a fourth-order spectral problem with boundary conditions depending on the eigenparameter. (English) Zbl 1456.34018 Bull. Iran. Math. Soc. 47, No. 1, 225-235 (2021). MSC: 34B05 34B24 34L10 34L20 34B08 34L15 PDF BibTeX XML Cite \textit{F. M. Namazov}, Bull. Iran. Math. Soc. 47, No. 1, 225--235 (2021; Zbl 1456.34018) Full Text: DOI
Aliyev, Ziyatkhan S.; Neymatov, Nazim A.; Rzayeva, Humay Sh. Unilateral global bifurcation from infinity in nonlinearizable one-dimensional Dirac problems. (English) Zbl 07321536 Int. J. Bifurcation Chaos Appl. Sci. Eng. 31, No. 1, Article ID 2150005, 10 p. (2021). MSC: 34B09 34L40 34C23 PDF BibTeX XML Cite \textit{Z. S. Aliyev} et al., Int. J. Bifurcation Chaos Appl. Sci. Eng. 31, No. 1, Article ID 2150005, 10 p. (2021; Zbl 07321536) Full Text: DOI
Damanik, David; Fillman, Jake; Helman, Mark; Kesten, Jacob; Sukhtaiev, Selim Random Hamiltonians with arbitrary point interactions in one dimension. (English) Zbl 07319392 J. Differ. Equations 282, 104-126 (2021). MSC: 47A 34L 81Q 34L40 81Q10 47A55 PDF BibTeX XML Cite \textit{D. Damanik} et al., J. Differ. Equations 282, 104--126 (2021; Zbl 07319392) Full Text: DOI
Freitas, Pedro; Lipovský, Jiří A Gelfand-Levitan trace formula for generic quantum graphs. (English) Zbl 07319380 Anal. Math. Phys. 11, No. 2, Paper No. 56, 20 p. (2021). Reviewer: Manfred Möller (Johannesburg) MSC: 34L05 34B45 34L40 34L20 PDF BibTeX XML Cite \textit{P. Freitas} and \textit{J. Lipovský}, Anal. Math. Phys. 11, No. 2, Paper No. 56, 20 p. (2021; Zbl 07319380) Full Text: DOI
Smirnov, A. G. Coupling constant dependence for the Schrödinger equation with an inverse-square potential. (English) Zbl 1454.34116 Adv. Oper. Theory 6, No. 2, Paper No. 31, 58 p. (2021). MSC: 34L10 34L40 47B25 81Q10 PDF BibTeX XML Cite \textit{A. G. Smirnov}, Adv. Oper. Theory 6, No. 2, Paper No. 31, 58 p. (2021; Zbl 1454.34116) Full Text: DOI
Jing, Guangdong; Wang, Penghui A note on “Problem of eigenvalues of stochastic Hamiltonian systems with boundary conditions”. (English) Zbl 07319293 C. R., Math., Acad. Sci. Paris 359, No. 1, 99-104 (2021). Reviewer: Erdogan Sen (Tekirdağ) MSC: 34L15 60H10 PDF BibTeX XML Cite \textit{G. Jing} and \textit{P. Wang}, C. R., Math., Acad. Sci. Paris 359, No. 1, 99--104 (2021; Zbl 07319293) Full Text: DOI
Boni, Filippo; Dovetta, Simone Prescribed mass ground states for a doubly nonlinear Schrödinger equation in dimension one. (English) Zbl 1458.81017 J. Math. Anal. Appl. 496, No. 1, Article ID 124797, 17 p. (2021). MSC: 81Q05 35Q55 34L40 35G55 35P30 35A01 35A02 35B38 PDF BibTeX XML Cite \textit{F. Boni} and \textit{S. Dovetta}, J. Math. Anal. Appl. 496, No. 1, Article ID 124797, 17 p. (2021; Zbl 1458.81017) Full Text: DOI
Blanes, Sergio; Casas, Fernando; González, Cesáreo; Thalhammer, Mechthild Convergence analysis of high-order commutator-free quasi-Magnus exponential integrators for nonautonomous linear Schrödinger equations. (English) Zbl 1460.65087 IMA J. Numer. Anal. 41, No. 1, 594-617 (2021). MSC: 65L05 65L20 65P10 34L40 PDF BibTeX XML Cite \textit{S. Blanes} et al., IMA J. Numer. Anal. 41, No. 1, 594--617 (2021; Zbl 1460.65087) Full Text: DOI
Akhtyamov, A. M. Nonexistence of degenerate boundary conditions in a spectral problem. (English. Russian original) Zbl 07314333 Differ. Equ. 57, No. 1, 117-121 (2021); translation from Differ. Uravn. 57, No. 1, 130-134 (2021). Reviewer: Andreas Fleige (Dortmund) MSC: 34B09 34B07 34L05 PDF BibTeX XML Cite \textit{A. M. Akhtyamov}, Differ. Equ. 57, No. 1, 117--121 (2021; Zbl 07314333); translation from Differ. Uravn. 57, No. 1, 130--134 (2021) Full Text: DOI
Polyakov, D. M. Nonlocal perturbation of a periodic problem for a second-order differential operator. (English. Russian original) Zbl 07314325 Differ. Equ. 57, No. 1, 11-18 (2021); translation from Differ. Uravn. 57, No. 1, 14-21 (2021). Reviewer: Erdogan Sen (Tekirdağ) MSC: 34L20 34L10 34D10 PDF BibTeX XML Cite \textit{D. M. Polyakov}, Differ. Equ. 57, No. 1, 11--18 (2021; Zbl 07314325); translation from Differ. Uravn. 57, No. 1, 14--21 (2021) Full Text: DOI
Carmona, Angeles; Encinas, Andres Marcos; Mitjana, Margarida Eigenvalues with respect to a weight for general boundary value problems on networks. (English) Zbl 07312131 Linear Algebra Appl. 614, 208-243 (2021). Reviewer: Jiři Lipovský (Hradec Králové) MSC: 34B45 34L15 34L40 PDF BibTeX XML Cite \textit{A. Carmona} et al., Linear Algebra Appl. 614, 208--243 (2021; Zbl 07312131) Full Text: DOI
Šepitka, Peter; Šimon Hilscher, Roman Distribution and number of focal points for linear Hamiltonian systems. (English) Zbl 1460.37082 Linear Algebra Appl. 611, 26-45 (2021). MSC: 37N35 34L15 37J37 93C15 PDF BibTeX XML Cite \textit{P. Šepitka} and \textit{R. Šimon Hilscher}, Linear Algebra Appl. 611, 26--45 (2021; Zbl 1460.37082) Full Text: DOI
Xie, Qilin Solutions for discrete Schrödinger equations with a nonlocal term. (English) Zbl 1457.39002 Appl. Math. Lett. 114, Article ID 106930, 8 p. (2021). MSC: 39A10 39A12 34L40 PDF BibTeX XML Cite \textit{Q. Xie}, Appl. Math. Lett. 114, Article ID 106930, 8 p. (2021; Zbl 1457.39002) Full Text: DOI
Damanik, David; Fillman, Jake; Gorodetski, Anton Multidimensional Schrödinger operators whose spectrum features a half-line and a Cantor set. (English) Zbl 1460.81026 J. Funct. Anal. 280, No. 7, Article ID 108911, 39 p. (2021). MSC: 81Q10 35P05 34L40 11B39 PDF BibTeX XML Cite \textit{D. Damanik} et al., J. Funct. Anal. 280, No. 7, Article ID 108911, 39 p. (2021; Zbl 1460.81026) Full Text: DOI
Tumanov, Sergey Completeness theorem for the system of eigenfunctions of the complex Schrödinger operator \(\mathcal{L}_c = - d^2 / d x^2 + c x^{2 / 3} \). (English) Zbl 1460.34104 J. Funct. Anal. 280, No. 7, Article ID 108820, 33 p. (2021). MSC: 34L10 34L40 PDF BibTeX XML Cite \textit{S. Tumanov}, J. Funct. Anal. 280, No. 7, Article ID 108820, 33 p. (2021; Zbl 1460.34104) Full Text: DOI
Stepanenko, Alexei Spectral inclusion and pollution for a class of dissipative perturbations. (English) Zbl 1456.81182 J. Math. Phys. 62, No. 1, 013501, 25 p. (2021). MSC: 81Q10 34L40 34B24 47A10 47A55 47A58 PDF BibTeX XML Cite \textit{A. Stepanenko}, J. Math. Phys. 62, No. 1, 013501, 25 p. (2021; Zbl 1456.81182) Full Text: DOI
Badanin, Andrey; Korotyaev, Evgeny L. Third-order operators with three-point conditions associated with Boussinesq’s equation. (English) Zbl 07305508 Appl. Anal. 100, No. 3, 527-560 (2021). MSC: 47E05 34L20 34L40 PDF BibTeX XML Cite \textit{A. Badanin} and \textit{E. L. Korotyaev}, Appl. Anal. 100, No. 3, 527--560 (2021; Zbl 07305508) Full Text: DOI
Dwivedi, Ravi; Sahai, Vivek Lie algebras of matrix difference differential operators and special matrix functions. (English) Zbl 07304618 Adv. Appl. Math. 122, Article ID 102109, 19 p. (2021). Reviewer: Jorge Vargas (Córdoba) MSC: 15A16 33C80 33C05 33C15 44A20 17B10 39A70 34L40 PDF BibTeX XML Cite \textit{R. Dwivedi} and \textit{V. Sahai}, Adv. Appl. Math. 122, Article ID 102109, 19 p. (2021; Zbl 07304618) Full Text: DOI
Hryniv, Rostyslav; Melnyk, Bohdan; Mykytyuk, Yaroslav Inverse scattering for reflectionless Schrödinger operators with integrable potentials and generalized soliton solutions for the KdV equation. (English) Zbl 07303662 Ann. Henri Poincaré 22, No. 2, 487-527 (2021). MSC: 47A40 34L25 34L40 35C08 81U40 37K15 37K40 37K60 37J35 37K10 PDF BibTeX XML Cite \textit{R. Hryniv} et al., Ann. Henri Poincaré 22, No. 2, 487--527 (2021; Zbl 07303662) Full Text: DOI
Kurasov, Pavel; Muller, Jacob \(n\)-Laplacians on metric graphs and almost periodic functions. I. (English) Zbl 07303652 Ann. Henri Poincaré 22, No. 1, 121-169 (2021). Reviewer: Michael Perelmuter (Kyjiw) MSC: 34L20 30D99 81U20 PDF BibTeX XML Cite \textit{P. Kurasov} and \textit{J. Muller}, Ann. Henri Poincaré 22, No. 1, 121--169 (2021; Zbl 07303652) Full Text: DOI
Korotyaev, Evgeny; Mokeev, Dmitrii Inverse resonance scattering for Dirac operators on the half-line. (English) Zbl 1459.37058 Anal. Math. Phys. 11, No. 1, Paper No. 32, 26 p. (2021). MSC: 37K15 35R30 34L40 34A55 PDF BibTeX XML Cite \textit{E. Korotyaev} and \textit{D. Mokeev}, Anal. Math. Phys. 11, No. 1, Paper No. 32, 26 p. (2021; Zbl 1459.37058) Full Text: DOI
Gesztesy, Fritz Book review of: J. Behrndt et al., Boundary value problems, Weyl functions, and differential operators. (English) Zbl 07301377 Bull. Am. Math. Soc., New Ser. 58, No. 1, 129-136 (2021). MSC: 00A17 47-02 47Axx 47Bxx 47E05 47Fxx 34Bxx 34Lxx 35Pxx 93Bxx PDF BibTeX XML Cite \textit{F. Gesztesy}, Bull. Am. Math. Soc., New Ser. 58, No. 1, 129--136 (2021; Zbl 07301377) Full Text: DOI Link
Aljawi, Salma; Marletta, Marco On the eigenvalues of spectral gaps of matrix-valued Schrödinger operators. (English) Zbl 1459.65045 Numer. Algorithms 86, No. 2, 637-657 (2021). MSC: 65F15 15A18 34L40 PDF BibTeX XML Cite \textit{S. Aljawi} and \textit{M. Marletta}, Numer. Algorithms 86, No. 2, 637--657 (2021; Zbl 1459.65045) Full Text: DOI
Bas, Erdal; Metin Turk, Funda; Ozarslan, Ramazan; Ercan, Ahu Spectral data of conformable Sturm-Liouville direct problems. (English) Zbl 07299670 Anal. Math. Phys. 11, No. 1, Paper No. 8, 18 p. (2021). Reviewer: Erdogan Sen (Tekirdağ) MSC: 34B24 34B09 34A08 34E10 34L05 34L15 PDF BibTeX XML Cite \textit{E. Bas} et al., Anal. Math. Phys. 11, No. 1, Paper No. 8, 18 p. (2021; Zbl 07299670) Full Text: DOI
Xu, Xiao-Chuan Inverse spectral problems for the generalized Robin-Regge problem with complex coefficients. (English) Zbl 07299388 J. Geom. Phys. 159, Article ID 103936, 11 p. (2021); corrigendum ibid. 164, Article ID 104208, 1 p. (2021). Reviewer: Manfred Möller (Johannesburg) MSC: 34A55 34B09 34L40 34L15 PDF BibTeX XML Cite \textit{X.-C. Xu}, J. Geom. Phys. 159, Article ID 103936, 11 p. (2021; Zbl 07299388) Full Text: DOI
Baibulov, I. V.; Budylin, A. M.; Levin, S. B. The scattering problem of three one-dimensional short-range quantum particles involving bound states in pair subsystems. The coordinate asymptotics of the resolvent kernel and of the eigenfunctions of the absolutely continuous spectrum. (English. Russian original) Zbl 1455.81044 J. Math. Sci., New York 252, No. 5, 567-575 (2021); translation from Zap. Nauchn. Semin. POMI 483, 5-18 (2019). MSC: 81U10 81V45 81Q10 34L40 34L20 47A10 PDF BibTeX XML Cite \textit{I. V. Baibulov} et al., J. Math. Sci., New York 252, No. 5, 567--575 (2021; Zbl 1455.81044); translation from Zap. Nauchn. Semin. POMI 483, 5--18 (2019) Full Text: DOI
Gesztesy, Fritz; Zinchenko, Maxim Eigenvectors from eigenvalues: the case of one-dimensional Schrödinger operators. (English) Zbl 1460.34033 Ann. Funct. Anal. 12, No. 1, Paper No. 5, 12 p. (2021). Reviewer: Erdogan Sen (Tekirdağ) MSC: 34B24 34B27 34L15 34L40 47A10 34L10 PDF BibTeX XML Cite \textit{F. Gesztesy} and \textit{M. Zinchenko}, Ann. Funct. Anal. 12, No. 1, Paper No. 5, 12 p. (2021; Zbl 1460.34033) Full Text: DOI
Chan, Chi-Hua; Huang, Po-Chun On the eigenvalues and the nodal points of the eigenfunctions of some eigenvalue problems with eigenparameter-dependent boundary conditions. (English) Zbl 07286320 Glasg. Math. J. 63, No. 1, 158-178 (2021). Reviewer: Bertin Zinsou (Johannesburg) MSC: 34L15 34B09 34L10 34B24 15A18 PDF BibTeX XML Cite \textit{C.-H. Chan} and \textit{P.-C. Huang}, Glasg. Math. J. 63, No. 1, 158--178 (2021; Zbl 07286320) Full Text: DOI
Mogilevskii, Vadim On eigenfunction expansions of differential equations with degenerating weight. (English) Zbl 1457.34124 J. Differ. Equations 272, 819-853 (2021). MSC: 34L10 34B09 34B40 47A06 47A20 47B25 PDF BibTeX XML Cite \textit{V. Mogilevskii}, J. Differ. Equations 272, 819--853 (2021; Zbl 1457.34124) Full Text: DOI
Volkmer, Hans The Laplace-Beltrami operator on the embedded torus. (English) Zbl 1458.34055 J. Differ. Equations 271, 821-848 (2021). Reviewer: Namig Guliyev (Baku) MSC: 34B24 34L15 34L40 34L20 47E05 PDF BibTeX XML Cite \textit{H. Volkmer}, J. Differ. Equations 271, 821--848 (2021; Zbl 1458.34055) Full Text: DOI
Badanin, Andrey; Korotyaev, Evgeny L. Hill’s operators with the potentials analytically dependent on energy. (English) Zbl 07283595 J. Differ. Equations 271, 638-664 (2021). MSC: 47E05 34L20 34L40 PDF BibTeX XML Cite \textit{A. Badanin} and \textit{E. L. Korotyaev}, J. Differ. Equations 271, 638--664 (2021; Zbl 07283595) Full Text: DOI
Valeev, N. F.; Nazirova, E. A. Direct and inverse spectral problems in the theory of oscillations of elastic plates with additional point interactions. (English. Russian original) Zbl 07283008 J. Math. Sci., New York 252, No. 2, 147-155 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 25-33 (2018). MSC: 47E05 34E05 34L05 PDF BibTeX XML Cite \textit{N. F. Valeev} and \textit{E. A. Nazirova}, J. Math. Sci., New York 252, No. 2, 147--155 (2021; Zbl 07283008); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 25--33 (2018) Full Text: DOI
Bagderina, Yu. Yu. Eigenfunctions of ordinary differential Euler operators. (English. Russian original) Zbl 07283006 J. Math. Sci., New York 252, No. 2, 125-134 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 3-12 (2018). MSC: 47E05 34L10 34B30 PDF BibTeX XML Cite \textit{Yu. Yu. Bagderina}, J. Math. Sci., New York 252, No. 2, 125--134 (2021; Zbl 07283006); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 3--12 (2018) Full Text: DOI
Jitomirskaya, Svetlana; Yang, Fan Pure point spectrum for the Maryland model: a constructive proof. (English) Zbl 1456.37053 Ergodic Theory Dyn. Syst. 41, No. 1, 283-294 (2021). MSC: 37H15 37D25 34L40 PDF BibTeX XML Cite \textit{S. Jitomirskaya} and \textit{F. Yang}, Ergodic Theory Dyn. Syst. 41, No. 1, 283--294 (2021; Zbl 1456.37053) Full Text: DOI
Pinasco, Juan Pablo; Scarola, Cristian A nodal inverse problem for measure geometric Laplacians. (English) Zbl 1455.65118 Commun. Nonlinear Sci. Numer. Simul. 94, Article ID 105542, 10 p. (2021). MSC: 65N21 28A80 34A55 34L15 PDF BibTeX XML Cite \textit{J. P. Pinasco} and \textit{C. Scarola}, Commun. Nonlinear Sci. Numer. Simul. 94, Article ID 105542, 10 p. (2021; Zbl 1455.65118) Full Text: DOI
Cuenin, Jean-Claude; Ibrogimov, Orif O. Sharp spectral bounds for complex perturbations of the indefinite Laplacian. (English) Zbl 1459.34190 J. Funct. Anal. 280, No. 1, Article ID 108804, 26 p. (2021). Reviewer: Alberto Saldaña (Ciudad de México) MSC: 34L15 34L40 PDF BibTeX XML Cite \textit{J.-C. Cuenin} and \textit{O. O. Ibrogimov}, J. Funct. Anal. 280, No. 1, Article ID 108804, 26 p. (2021; Zbl 1459.34190) Full Text: DOI
Chen, Mei; Zhu, Xia Retraction notice to: “Solvability of boundary value problems for the general Schrödinger equation via Schrödinger-type identity methods”. (English) Zbl 1445.39011 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 202, Article ID 112150, 1 p. (2021). MSC: 39A27 39A12 34L40 PDF BibTeX XML Cite \textit{M. Chen} and \textit{X. Zhu}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 202, Article ID 112150, 1 p. (2021; Zbl 1445.39011) Full Text: DOI
Betancor, Jorge J.; Hu, Wenting; Wu, Huoxiong; Yang, Dongyong Boundedness of oscillation and variation of semigroups associated with Bessel Schrödinger operators. (English) Zbl 1456.42027 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 202, Article ID 112146, 32 p. (2021). MSC: 42B35 42B25 42B30 30L99 34L40 PDF BibTeX XML Cite \textit{J. J. Betancor} et al., Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 202, Article ID 112146, 32 p. (2021; Zbl 1456.42027) Full Text: DOI
Aktosun, Tuncay; Weder, Ricardo Direct and inverse scattering for the matrix Schrödinger equation. (English) Zbl 1460.34004 Applied Mathematical Sciences 203. Cham: Springer (ISBN 978-3-030-38430-2/hbk; 978-3-030-38433-3/pbk; 978-3-030-38431-9/ebook). xiii, 624 p. (2021). Reviewer: Jiři Lipovský (Hradec Králové) MSC: 34-02 47-02 81-02 34L25 34L40 PDF BibTeX XML Cite \textit{T. Aktosun} and \textit{R. Weder}, Direct and inverse scattering for the matrix Schrödinger equation. Cham: Springer (2021; Zbl 1460.34004) Full Text: DOI
Hıra, Fatma Sampling theorem associated with Dirac system of the Hahn difference operator. (English) Zbl 07360650 Appl. Math. E-Notes 20, 115-123 (2020). MSC: 94A20 33D15 35Q41 34L20 39A70 PDF BibTeX XML Cite \textit{F. Hıra}, Appl. Math. E-Notes 20, 115--123 (2020; Zbl 07360650) Full Text: Link
Mirzaei, Hanif Isospectral sixth order Sturm-Liouville eigenvalue problems. (English) Zbl 07359850 Comput. Methods Differ. Equ. 8, No. 4, 762-769 (2020). MSC: 34B24 34L05 PDF BibTeX XML Cite \textit{H. Mirzaei}, Comput. Methods Differ. Equ. 8, No. 4, 762--769 (2020; Zbl 07359850) Full Text: DOI
Barzegar Kelishami, Hasan; Fariborzi Araghi, Mohammad Ali; Amirfakhrian, Majid The use of CESTAC method to find optimal shape parameter and optimal number of points in RBF-meshless methods to solve differential equations. (English) Zbl 07359846 Comput. Methods Differ. Equ. 8, No. 4, 685-707 (2020). MSC: 34B05 34L30 35A09 65Mxx 65L10 PDF BibTeX XML Cite \textit{H. Barzegar Kelishami} et al., Comput. Methods Differ. Equ. 8, No. 4, 685--707 (2020; Zbl 07359846) Full Text: DOI
Golovaty, Yuriy On spectrum of strings with \(\delta'\)-like perturbations of mass density. (English) Zbl 07353892 Visn. L’viv. Univ., Ser. Mekh.-Mat. 89, 60-79 (2020). MSC: 34B24 34L05 34L10 PDF BibTeX XML Cite \textit{Y. Golovaty}, Visn. L'viv. Univ., Ser. Mekh.-Mat. 89, 60--79 (2020; Zbl 07353892) Full Text: DOI
Abdullayeva, Konul F.; Aliyev, Ziyatkhan S.; Kerimov, Nazim B. On the uniform convergence of Fourier series expansions in the system of eigenfunctions of the equation of a vibrating rod at one end of which the mass is concentrated. (English) Zbl 07353719 Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 46, No. 2, 226-242 (2020). MSC: 34B05 34B08 34B24 34L10 34L20 PDF BibTeX XML Cite \textit{K. F. Abdullayeva} et al., Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 46, No. 2, 226--242 (2020; Zbl 07353719) Full Text: DOI
Guerfi, Abderrahim; Ardjouni, Abdelouaheb Investigation of the periodicity and stability in the neutral differential systems by using Krasnoselskii’s fixed point theorem. (English) Zbl 07353718 Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 46, No. 2, 210-225 (2020). MSC: 34K13 34A34 34K30 34L30 PDF BibTeX XML Cite \textit{A. Guerfi} and \textit{A. Ardjouni}, Proc. Inst. Math. Mech., Natl. Acad. Sci. Azerb. 46, No. 2, 210--225 (2020; Zbl 07353718) Full Text: DOI
Aliyev, S. A. On spectral properties of the family of fourth-order differential operators with finite and exponentially decreasing coefficients. (English) Zbl 07353710 J. Contemp. Appl. Math. 10, No. 2, 101-109 (2020). MSC: 34L05 34L25 47E05 47A40 PDF BibTeX XML Cite \textit{S. A. Aliyev}, J. Contemp. Appl. Math. 10, No. 2, 101--109 (2020; Zbl 07353710) Full Text: Link
Gasymov, T. B.; Maharramova, G. V.; Kasimov, T. F. Completeness and minimality of eigenfunctions of a spectral problem in spaces \(L_p\oplus C\) and \(L_p\). (Russian. English summary) Zbl 07353709 J. Contemp. Appl. Math. 10, No. 2, 84-100 (2020). MSC: 34L10 34L30 PDF BibTeX XML Cite \textit{T. B. Gasymov} et al., J. Contemp. Appl. Math. 10, No. 2, 84--100 (2020; Zbl 07353709) Full Text: Link
Karahan, D.; Mamedov, Kh. R. Sampling theory associated with \(q\)-Sturm-Liouville operator with discontinuity conditions. (English) Zbl 07353705 J. Contemp. Appl. Math. 10, No. 2, 40-48 (2020). MSC: 34L10 39A13 47B25 94A20 PDF BibTeX XML Cite \textit{D. Karahan} and \textit{Kh. R. Mamedov}, J. Contemp. Appl. Math. 10, No. 2, 40--48 (2020; Zbl 07353705) Full Text: Link
Kennedy, James B.; Lang, Robin On the eigenvalues of quantum graph Laplacians with large complex \(\delta\) couplings. (English) Zbl 07348211 Port. Math. (N.S.) 77, No. 2, 133-161 (2020). MSC: 34B45 34L15 35R02 47A10 81Q12 81Q35 PDF BibTeX XML Cite \textit{J. B. Kennedy} and \textit{R. Lang}, Port. Math. (N.S.) 77, No. 2, 133--161 (2020; Zbl 07348211) Full Text: DOI
Niu, Tian; Hao, Xiaoling; Sun, Jiong; Li, Kun Canonical forms of self-adjoint boundary conditions for regular differential operators of order three. (English) Zbl 1460.34034 Oper. Matrices 14, No. 1, 207-220 (2020). MSC: 34B24 34L15 PDF BibTeX XML Cite \textit{T. Niu} et al., Oper. Matrices 14, No. 1, 207--220 (2020; Zbl 1460.34034) Full Text: DOI