Cancedda, Andrea; Chiadó Piat, Valeria; Nazarov, Sergei A.; Taskinen, Jari Spectral gaps for the linear water-wave problem in a channel with thin structures. (English) Zbl 1523.35131 Math. Nachr. 295, No. 4, 657-682 (2022). MSC: 35J05 35J25 35P15 47A10 PDFBibTeX XMLCite \textit{A. Cancedda} et al., Math. Nachr. 295, No. 4, 657--682 (2022; Zbl 1523.35131) Full Text: DOI OA License
Seelmann, Albrecht On a minimax principle in spectral gaps. (English) Zbl 1522.47033 Complex Anal. Oper. Theory 16, No. 3, Paper No. 29, 36 p. (2022). Reviewer: Miyeon Kwon (Platteville) MSC: 47A55 47A10 47A75 PDFBibTeX XMLCite \textit{A. Seelmann}, Complex Anal. Oper. Theory 16, No. 3, Paper No. 29, 36 p. (2022; Zbl 1522.47033) Full Text: DOI arXiv
Nazarov, Sergei A.; Taskinen, Jari Pathology of essential spectra of elliptic problems in periodic family of beads threaded by a spoke thinning at infinity. (English) Zbl 1467.35226 Atti Accad. Naz. Lincei, Cl. Sci. Fis. Mat. Nat., IX. Ser., Rend. Lincei, Mat. Appl. 31, No. 4, 939-969 (2020). MSC: 35P05 35J57 PDFBibTeX XMLCite \textit{S. A. Nazarov} and \textit{J. Taskinen}, Atti Accad. Naz. Lincei, Cl. Sci. Fis. Mat. Nat., IX. Ser., Rend. Lincei, Mat. Appl. 31, No. 4, 939--969 (2020; Zbl 1467.35226) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Lazrag, Nawrez Sequence of multivalued linear operators converging in the generalized sense. (English) Zbl 07290389 Bull. Iran. Math. Soc. 46, No. 6, 1697-1729 (2020). MSC: 47A06 39B42 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bull. Iran. Math. Soc. 46, No. 6, 1697--1729 (2020; Zbl 07290389) Full Text: DOI
Glück, Jochen Spectral gaps for hyperbounded operators. (English) Zbl 1480.47006 Adv. Math. 362, Article ID 106958, 24 p. (2020). MSC: 47A10 47B65 47B38 47D06 46E30 46B08 46B20 PDFBibTeX XMLCite \textit{J. Glück}, Adv. Math. 362, Article ID 106958, 24 p. (2020; Zbl 1480.47006) Full Text: DOI arXiv
Bakharev, F. L.; Taskinen, J. Bands in the spectrum of a periodic elastic waveguide. (English) Zbl 1378.35295 Z. Angew. Math. Phys. 68, No. 5, Paper No. 102, 27 p. (2017). MSC: 35Q74 35J57 74J05 PDFBibTeX XMLCite \textit{F. L. Bakharev} and \textit{J. Taskinen}, Z. Angew. Math. Phys. 68, No. 5, Paper No. 102, 27 p. (2017; Zbl 1378.35295) Full Text: DOI arXiv Link
Nazarov, Sergei A.; Taskinen, Jari Spectral gaps for periodic piezoelectric waveguides. (English) Zbl 1333.35275 Z. Angew. Math. Phys. 66, No. 6, 3017-3047 (2015). Reviewer: Boris V. Loginov (Ul’yanovsk) MSC: 35Q74 35H99 74F15 PDFBibTeX XMLCite \textit{S. A. Nazarov} and \textit{J. Taskinen}, Z. Angew. Math. Phys. 66, No. 6, 3017--3047 (2015; Zbl 1333.35275) Full Text: DOI
Muminov, M. E.; Aliev, N. M. Discrete spectrum of a noncompact perturbation of a three-particle Schrödinger operator on a lattice. (English. Russian original) Zbl 1319.81038 Theor. Math. Phys. 182, No. 3, 381-396 (2015); translation from Teor. Mat. Fiz. 182, No. 3, 435-452 (2015). MSC: 81Q10 81Q05 81Q35 82D25 PDFBibTeX XMLCite \textit{M. E. Muminov} and \textit{N. M. Aliev}, Theor. Math. Phys. 182, No. 3, 381--396 (2015; Zbl 1319.81038); translation from Teor. Mat. Fiz. 182, No. 3, 435--452 (2015) Full Text: DOI
Nazarov, S. A. Gap in the essential spectrum of the Neumann problem for an elliptic system in a periodic domain. (English. Russian original) Zbl 1271.35025 Funct. Anal. Appl. 43, No. 3, 239-241 (2009); translation from Funkts. Anal. Prilozh. 43, No. 3, 92-95 (2009). MSC: 35J57 35P05 PDFBibTeX XMLCite \textit{S. A. Nazarov}, Funct. Anal. Appl. 43, No. 3, 239--241 (2009; Zbl 1271.35025); translation from Funkts. Anal. Prilozh. 43, No. 3, 92--95 (2009) Full Text: DOI
Schmidt, Karl Michael Eigenvalue asymptotics of perturbed periodic Dirac systems in the slow-decay limit. (English) Zbl 1027.81008 Proc. Am. Math. Soc. 131, No. 4, 1205-1214 (2003). Reviewer: J.B.Butler jun.(Portland) MSC: 81Q10 81Q15 34L40 47E05 PDFBibTeX XMLCite \textit{K. M. Schmidt}, Proc. Am. Math. Soc. 131, No. 4, 1205--1214 (2003; Zbl 1027.81008) Full Text: DOI arXiv
Post, Olaf Periodic manifolds, spectral gaps, and eigenvalues in gaps. (English) Zbl 1008.58023 Demuth, Michael (ed.) et al., Partial differential equations and spectral theory. Proceedings of the PDE 2000 conference, Clausthal, Germany, July 24-28, 2000. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 126, 251-260 (2001). Reviewer: Novica Blažić (Beograd) MSC: 58J50 35P05 57M10 35A15 PDFBibTeX XMLCite \textit{O. Post}, in: Partial differential equations and spectral theory. Proceedings of the PDE 2000 conference, Clausthal, Germany, July 24--28, 2000. Basel: Birkhäuser. 251--260 (2001; Zbl 1008.58023)
Wang, Feng-Yu Existence of the spectral gap for elliptic operators. (English) Zbl 1075.35540 Ark. Mat. 37, No. 2, 395-407 (1999). Reviewer: Bodo Dittmar (Halle) MSC: 35P15 60H30 PDFBibTeX XMLCite \textit{F.-Y. Wang}, Ark. Mat. 37, No. 2, 395--407 (1999; Zbl 1075.35540) Full Text: DOI arXiv
Griesemer, Marcel; Siedentop, Heinz A minimax principle for the eigenvalues in spectral gaps. (English) Zbl 0952.47022 J. Lond. Math. Soc., II. Ser. 60, No. 2, 490-500 (1999). Reviewer: Michael Perelmuter (Kyïv) MSC: 47B25 34L15 34L40 35P15 47A75 47F05 PDFBibTeX XMLCite \textit{M. Griesemer} and \textit{H. Siedentop}, J. Lond. Math. Soc., II. Ser. 60, No. 2, 490--500 (1999; Zbl 0952.47022) Full Text: DOI
Stuart, C. A. Bifurcation from the essential spectrum. (English) Zbl 0888.47045 Matzeu, Michele (ed.) et al., Topological nonlinear analysis II: degree, singularity and variations. Papers presented in part at the 2nd topological analysis workshop on degree, singularity and variations: developments of the last 25 years, Frascati, Italy, June 1995. Boston, MA: Birkhäuser. Prog. Nonlinear Differ. Equ. Appl. 27, 397-443 (1997). Reviewer: M.Kučera (Praha) MSC: 47J10 58C30 47A10 58E07 35B32 PDFBibTeX XMLCite \textit{C. A. Stuart}, Prog. Nonlinear Differ. Equ. Appl. 27, 397--443 (1997; Zbl 0888.47045)
Zimmermann, S.; Mertins, U. Variational bounds to eigenvalues of selfadjoint eigenvalue problems with arbitrary spectrum. (English) Zbl 0831.35117 Z. Anal. Anwend. 14, No. 2, 327-345 (1995). Reviewer: R.D.Grigorieff (Berlin) MSC: 35P15 49R50 65N25 65N30 PDFBibTeX XMLCite \textit{S. Zimmermann} and \textit{U. Mertins}, Z. Anal. Anwend. 14, No. 2, 327--345 (1995; Zbl 0831.35117) Full Text: DOI
Feldman, Israel Finiteness of the discrete spectrum of some block Toeplitz operators. (English) Zbl 0809.47022 Integral Equations Oper. Theory 16, No. 3, 385-391 (1993). Reviewer: B.D.Khanh (Paris) MSC: 47B35 47A10 47A56 PDFBibTeX XMLCite \textit{I. Feldman}, Integral Equations Oper. Theory 16, No. 3, 385--391 (1993; Zbl 0809.47022) Full Text: DOI
Curto, Raúl E.; Fialkow, Lawrence A. The spectral picture of \((L_ A,R_ B)\). (English) Zbl 0626.47018 J. Funct. Anal. 71, 371-392 (1987). MSC: 47A62 47L30 47A10 47A53 47C10 47B47 PDFBibTeX XMLCite \textit{R. E. Curto} and \textit{L. A. Fialkow}, J. Funct. Anal. 71, 371--392 (1987; Zbl 0626.47018) Full Text: DOI
Harris, B. J. On the essential spectrum of self-adjoint operators. (English) Zbl 0455.47040 Proc. R. Soc. Edinb., Sect. A 86, 261-274 (1980). MSC: 47E05 47A10 PDFBibTeX XMLCite \textit{B. J. Harris}, Proc. R. Soc. Edinb., Sect. A, Math. 86, 261--274 (1980; Zbl 0455.47040) Full Text: DOI
Klaus, M.; Wüst, R. Spectral properties of Dirac operators with singular potentials. (English) Zbl 0423.47014 J. Math. Anal. Appl. 72, 206-214 (1979). MSC: 47F05 47A10 81Q15 81T20 PDFBibTeX XMLCite \textit{M. Klaus} and \textit{R. Wüst}, J. Math. Anal. Appl. 72, 206--214 (1979; Zbl 0423.47014) Full Text: DOI